diff --git a/.travis.yml b/.travis.yml
index cb1e575..3c4a0f5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,12 +1,19 @@
 language: ruby
 sudo: false
 gemfile:
-  - gemfiles/Gemfile32.ci
-  - gemfiles/Gemfile40.ci
-  - gemfiles/Gemfile41.ci
-  - gemfiles/Gemfile42.ci
-install: bundle install -j4 --path vendor/bundle
+  - gemfiles/rails_32.gemfile
+  - gemfiles/rails_40.gemfile
+  - gemfiles/rails_41.gemfile
+  - gemfiles/rails_42.gemfile
 rvm:
   - 1.9.3
   - 2.0.0
-  - 2.1.1
+  - 2.1.5
+  - 2.2.0
+matrix:
+  exclude:
+    # NOTE : incompatible
+    - rvm: 2.2.0
+      gemfile: gemfiles/rails_32.gemfile
+install: bundle install -j4 --path vendor/bundle
+
diff --git a/Appraisals b/Appraisals
new file mode 100644
index 0000000..387bb79
--- /dev/null
+++ b/Appraisals
@@ -0,0 +1,16 @@
+appraise 'rails-32' do
+  gem 'rails', '~> 3.2.21'
+end
+
+appraise 'rails-40' do
+  gem 'rails', '~> 4.0.13'
+end
+
+appraise 'rails-41' do
+  gem 'rails', '~> 4.1.9'
+end
+
+appraise 'rails-42' do
+  gem 'rails', '~> 4.2.0'
+end
+
diff --git a/Gemfile b/Gemfile
index 685c449..7b05d35 100644
--- a/Gemfile
+++ b/Gemfile
@@ -17,6 +17,9 @@ group :development do
   gem 'highline'
   # gem 'coderay', path: '../coderay'
 
+  # multiple rails versions support
+  gem 'appraisal'
+
   # build template static
   # run `rake assets:precompile`
   # to get bundled application.(js|css)
@@ -27,5 +30,6 @@ group :development do
   gem 'bootstrap-sass', '~> 3.1.1'
   gem 'jquery-rails'
   gem 'remotipart'
-  gem "launchy"
+  gem 'launchy'
 end
+
diff --git a/features/atom_persistent_within_the_same_type.feature b/features/atom_persistent_within_the_same_type.feature
index 3b2aa07..3407012 100644
--- a/features/atom_persistent_within_the_same_type.feature
+++ b/features/atom_persistent_within_the_same_type.feature
@@ -51,9 +51,9 @@ Feature: atom persistent within test suite
       method: PATCH
       path_info: "/api/v2/users/100"
       path_params:
-        id: '100'
         controller: api/v2/users
         action: update
+        id: '100'
     """
 
   Scenario: json schema tests response parameters and keep atom unchanged using "users/update"
@@ -129,8 +129,9 @@ Feature: atom persistent within test suite
       method: PATCH
       path_info: "/api/v2/users/100"
       path_params:
-        id: '100'
         controller: api/v2/users
         action: update
+        id: '100'
 
     """
+
diff --git a/features/controller_nested_schema_scaffolding.feature b/features/controller_nested_schema_scaffolding.feature
index 44febbf..31c04df 100644
--- a/features/controller_nested_schema_scaffolding.feature
+++ b/features/controller_nested_schema_scaffolding.feature
@@ -71,10 +71,11 @@ Feature: controller nested schema scaffolding
       method: GET
       path_info: "/api/v1/users/1/repos.json"
       path_params:
-        user_id: '1'
         controller: api/v1/repos
         action: index
+        user_id: '1'
       query_params:
         limit: 1
 
     """
+
diff --git a/features/controller_schema_scaffolding.feature b/features/controller_schema_scaffolding.feature
index 45249c0..b8d18bf 100644
--- a/features/controller_schema_scaffolding.feature
+++ b/features/controller_schema_scaffolding.feature
@@ -63,8 +63,9 @@ Feature: controller schema scaffolding
       method: GET
       path_info: "/api/v1/users/1.json"
       path_params:
-        id: '1'
         controller: api/v1/users
         action: show
+        id: '1'
 
   """
+
diff --git a/features/dereferencing_through_inlining.feature b/features/dereferencing_through_inlining.feature
index b0cd3bb..19a4900 100644
--- a/features/dereferencing_through_inlining.feature
+++ b/features/dereferencing_through_inlining.feature
@@ -23,9 +23,9 @@ Feature: $ref defererencing through inlining
         method: PATCH
         path_info: "/api/v3/users/1"
         path_params:
-          id: '1'
           controller: api/v3/users
           action: update
+          id: '1'
 
       """
     And a file named "lurker/definitions/user_request_parameters.json" with:
@@ -100,3 +100,4 @@ Feature: $ref defererencing through inlining
         ]
       }
       """
+
diff --git a/features/html_generation.feature b/features/html_generation.feature
index c9f515d..65f00a2 100644
--- a/features/html_generation.feature
+++ b/features/html_generation.feature
@@ -38,8 +38,8 @@ Feature: html generation
         method: POST
         path_info: "/api/v1/users.json"
         path_params:
-          action: create
           controller: api/v1/users
+          action: create
       """
 
   When I successfully run `bin/lurker convert`
@@ -73,3 +73,4 @@ Feature: html generation
    And I submit it
 
   Then I should see JSON response with "can't be blank"
+
diff --git a/features/minitest.feature b/features/minitest.feature
index ff918a3..bf52c03 100644
--- a/features/minitest.feature
+++ b/features/minitest.feature
@@ -57,8 +57,8 @@ Feature: minitest
       method: DELETE
       path_info: "/api/v1/users/1/repos/1.json"
       path_params:
-        action: destroy
         controller: api/v1/repos
+        action: destroy
         user_id: '1'
         id: '1'
 
@@ -100,8 +100,8 @@ Feature: minitest
         path_info: "/api/v1/users/1"
         method: PATCH
         path_params:
-          action: update
           controller: api/v1/users
+          action: update
           id: 1
           """
 
@@ -136,3 +136,4 @@ Feature: minitest
     """
     1 (runs|tests), 1 assertions, 0 failures, 1 errors, 0 skips
     """
+
diff --git a/features/multidomain_support.feature b/features/multidomain_support.feature
index a2a0e06..9d4cc18 100644
--- a/features/multidomain_support.feature
+++ b/features/multidomain_support.feature
@@ -47,8 +47,8 @@ Feature: mutidomain support
         method: DELETE
         path_info: "/api/v1/users/1.json"
         path_params:
-          action: destroy
           controller: api/v1/users
+          action: destroy
           id: 1
       """
 
diff --git a/features/multitype_request_support.feature b/features/multitype_request_support.feature
index 8d65fa8..a924105 100644
--- a/features/multitype_request_support.feature
+++ b/features/multitype_request_support.feature
@@ -52,9 +52,9 @@ Feature: multitype request support
       method: PATCH
       path_info: "/api/v2/users/1"
       path_params:
-        id: '1'
         controller: api/v2/users
         action: update
+        id: '1'
     """
 
   Scenario: json schema tests response parameters and update request parameters using "users/update"
@@ -130,8 +130,9 @@ Feature: multitype request support
       method: PATCH
       path_info: "/api/v2/users/1"
       path_params:
-        id: '1'
         controller: api/v2/users
         action: update
+        id: '1'
 
     """
+
diff --git a/features/partials.feature b/features/partials.feature
index 7099271..83e204c 100644
--- a/features/partials.feature
+++ b/features/partials.feature
@@ -61,8 +61,8 @@ Feature: partials
         method: POST
         path_info: "/api/v1/users/1/repos.json"
         path_params:
-          action: create
           controller: api/v1/repos
+          action: create
           user_id: '1'
       """
 
@@ -77,7 +77,7 @@ Feature: partials
 
         it "creates a new repo" do
           expect {
-            post "api/v1/users/#{user.id}/repos.json", repo: { name: 'new-gem' }
+            post "/api/v1/users/#{user.id}/repos.json", repo: { name: 'new-gem' }
             expect(response).to be_success
             expect(JSON.parse(response.body)['user']).to eq JSON.parse(user.to_json)
           }.to change { Repo.count } .by(1)
@@ -97,3 +97,4 @@ Feature: partials
     create  index.html
     create  api/v1/users/__user_id/repos-POST.html
     """
+
diff --git a/features/request_nested_schema_scaffolding.feature b/features/request_nested_schema_scaffolding.feature
index f18944b..d71aa15 100644
--- a/features/request_nested_schema_scaffolding.feature
+++ b/features/request_nested_schema_scaffolding.feature
@@ -8,7 +8,6 @@ Feature: request nested schema scaffolding
       require "spec_helper"
 
       describe Api::V1::ReposController, :lurker do
-
         let!(:user) do
           User.where(name: 'razum2um').first_or_create!.tap do |u|
             u.repos.first_or_create!(name: 'lurker')
@@ -16,7 +15,7 @@ Feature: request nested schema scaffolding
         end
 
         it "shows a user's repo" do
-          get "api/v1/users/#{user.id}/repos/#{user.repos.first.id}.json"
+          get "/api/v1/users/#{user.id}/repos/#{user.repos.first.id}.json"
           expect(response).to be_success
         end
       end
@@ -62,9 +61,10 @@ Feature: request nested schema scaffolding
       method: GET
       path_info: "/api/v1/users/1/repos/1.json"
       path_params:
-        action: show
         controller: api/v1/repos
+        action: show
         user_id: '1'
         id: '1'
 
     """
+
diff --git a/features/request_schema_scaffolding.feature b/features/request_schema_scaffolding.feature
index d609f44..293ba3e 100644
--- a/features/request_schema_scaffolding.feature
+++ b/features/request_schema_scaffolding.feature
@@ -19,7 +19,7 @@ Feature: request schema scaffolding
         end
 
         it "lists all the users" do
-          get "api/v1/users.json?limit=1"
+          get "/api/v1/users.json?limit=1"
           expect(response).to be_success
           expect(JSON.parse(response.body).size).to eq 1
         end
@@ -72,9 +72,10 @@ Feature: request schema scaffolding
       method: GET
       path_info: "/api/v1/users.json"
       path_params:
-        action: index
         controller: api/v1/users
+        action: index
       query_params:
         limit: '1'
 
     """
+
diff --git a/features/schema_suffixes.feature b/features/schema_suffixes.feature
index 6c424e0..8f33309 100644
--- a/features/schema_suffixes.feature
+++ b/features/schema_suffixes.feature
@@ -49,8 +49,8 @@ Feature: schema suffixes
         path_info: "/api/v1/users/razum2um/repos/lurker.json"
         method: PATCH
         path_params:
-          action: update
           controller: api/v1/repos
+          action: update
           user_id: razum2um
           id: lurker
       """
@@ -120,8 +120,8 @@ Feature: schema suffixes
         method: PATCH
         suffix: 'failed'
         path_params:
-          action: update
           controller: api/v1/repos
+          action: update
           user_id: razum2um
           id: lurker
       """
diff --git a/features/schema_updating_within_test_suite.feature b/features/schema_updating_within_test_suite.feature
index 784aee2..d35a7c4 100644
--- a/features/schema_updating_within_test_suite.feature
+++ b/features/schema_updating_within_test_suite.feature
@@ -54,9 +54,9 @@ Feature: schema updating within test suite
       method: PATCH
       path_info: "/api/v2/users/1"
       path_params:
-        id: '1'
         controller: api/v2/users
         action: update
+        id: '1'
     """
 
   Scenario: json schema tests response parameters and request parameters and show errors from both using "users/update"
@@ -166,8 +166,9 @@ Feature: schema updating within test suite
       method: PATCH
       path_info: "/api/v2/users/1"
       path_params:
-        id: '1'
         controller: api/v2/users
         action: update
+        id: '1'
 
     """
+
diff --git a/features/test_endpoint.feature b/features/test_endpoint.feature
index fd0e2dc..cc900fb 100644
--- a/features/test_endpoint.feature
+++ b/features/test_endpoint.feature
@@ -48,8 +48,8 @@ Feature: test endpoint
         path_info: "/api/v1/users/1"
         method: PATCH
         path_params:
-          action: update
           controller: api/v1/users
+          action: update
           id: 1
       """
 
@@ -75,35 +75,6 @@ Feature: test endpoint
   When I run `bin/rspec spec/controllers/api/v1/users_controller_spec.rb`
   Then the example should pass
 
-  Scenario: json schema tests request parameters and tell what fails using "users/update"
-    Given a file named "spec/controllers/api/v1/users_controller_spec.rb" with:
-      """ruby
-      require "spec_helper"
-
-      describe Api::V1::UsersController, :lurker do
-        render_views
-
-        let(:user) do
-          User.where(name: 'razum2um').first_or_create!
-        end
-
-        it "updates a user" do
-          patch :update, id: user.id, user: { name: 1 }, format: 'json'
-          expect(response).to be_success
-        end
-      end
-      """
-
-  When I run `bin/rspec spec/controllers/api/v1/users_controller_spec.rb`
-  Then the output should contain failures:
-    """
-    Lurker::ValidationError:
-      Response
-        The property '#/name' of type Fixnum did not match the following type: string
-
-    1 example, 1 failure
-    """
-
   Scenario: json schema tests response parameters and tell what fails using "users/update"
     Given a file named "spec/controllers/api/v1/users_controller_blank_spec.rb" with:
       """ruby
@@ -132,3 +103,4 @@ Feature: test endpoint
 
     1 example, 1 failure
     """
+
diff --git a/gemfiles/Gemfile32.ci b/gemfiles/Gemfile32.ci
deleted file mode 100644
index 1e65739..0000000
--- a/gemfiles/Gemfile32.ci
+++ /dev/null
@@ -1,6 +0,0 @@
-source 'https://rubygems.org'
-
-# Specify your gem's dependencies in lurker.gemspec
-gemspec path: '../'
-
-gem 'rails', '~> 3.2.17'
diff --git a/gemfiles/Gemfile40.ci b/gemfiles/Gemfile40.ci
deleted file mode 100644
index 0e43977..0000000
--- a/gemfiles/Gemfile40.ci
+++ /dev/null
@@ -1,6 +0,0 @@
-source 'https://rubygems.org'
-
-# Specify your gem's dependencies in lurker.gemspec
-gemspec path: '../'
-
-gem 'rails', '~> 4.0.4'
diff --git a/gemfiles/Gemfile41.ci b/gemfiles/Gemfile41.ci
deleted file mode 100644
index 5a99a7e..0000000
--- a/gemfiles/Gemfile41.ci
+++ /dev/null
@@ -1,6 +0,0 @@
-source 'https://rubygems.org'
-
-# Specify your gem's dependencies in lurker.gemspec
-gemspec path: '../'
-
-gem 'rails', '~> 4.1.0'
diff --git a/gemfiles/Gemfile42.ci b/gemfiles/Gemfile42.ci
deleted file mode 100644
index 10012ef..0000000
--- a/gemfiles/Gemfile42.ci
+++ /dev/null
@@ -1,6 +0,0 @@
-source 'https://rubygems.org'
-
-# Specify your gem's dependencies in lurker.gemspec
-gemspec path: '../'
-
-gem 'rails', '~> 4.2.0'
diff --git a/gemfiles/rails_32.gemfile b/gemfiles/rails_32.gemfile
new file mode 100644
index 0000000..c4029a6
--- /dev/null
+++ b/gemfiles/rails_32.gemfile
@@ -0,0 +1,7 @@
+source "https://rubygems.org"
+
+# Specify your gem's dependencies in lurker.gemspec
+gemspec path: "../"
+
+gem "rails", "~> 3.2.21"
+
diff --git a/gemfiles/rails_40.gemfile b/gemfiles/rails_40.gemfile
new file mode 100644
index 0000000..14ae5c8
--- /dev/null
+++ b/gemfiles/rails_40.gemfile
@@ -0,0 +1,7 @@
+source "https://rubygems.org"
+
+# Specify your gem's dependencies in lurker.gemspec
+gemspec path: "../"
+
+gem "rails", "~> 4.0.13"
+
diff --git a/gemfiles/rails_41.gemfile b/gemfiles/rails_41.gemfile
new file mode 100644
index 0000000..969e076
--- /dev/null
+++ b/gemfiles/rails_41.gemfile
@@ -0,0 +1,7 @@
+source "https://rubygems.org"
+
+# Specify your gem's dependencies in lurker.gemspec
+gemspec path: "../"
+
+gem "rails", "~> 4.1.9"
+
diff --git a/gemfiles/rails_42.gemfile b/gemfiles/rails_42.gemfile
new file mode 100644
index 0000000..80719e6
--- /dev/null
+++ b/gemfiles/rails_42.gemfile
@@ -0,0 +1,7 @@
+source "https://rubygems.org"
+
+# Specify your gem's dependencies in lurker.gemspec
+gemspec path: "../"
+
+gem "rails", "~> 4.2.0"
+
diff --git a/lib/lurker/server.rb b/lib/lurker/server.rb
index 6b8511e..16d9f4b 100644
--- a/lib/lurker/server.rb
+++ b/lib/lurker/server.rb
@@ -47,8 +47,11 @@ def self.to_rack(options = {})
          :try => ['.html', 'index.html', '/index.html'] # try these postfixes sequentially
 
       end
-      Lurker.const_set("Rack_#{rand 10}_#{Time.now.to_i}", cls)
+
+      rack_name = "Rack_#{srand}_#{Time.now.strftime('%s%N')}"
+      Lurker.const_set(rack_name, cls)
       cls
     end
   end
 end
+
diff --git a/lib/lurker/spec_helper/rails.rb b/lib/lurker/spec_helper/rails.rb
index a536eb6..cb8e651 100644
--- a/lib/lurker/spec_helper/rails.rb
+++ b/lib/lurker/spec_helper/rails.rb
@@ -1,3 +1,4 @@
+require 'active_support/concern'
 require 'lurker/spy'
 
 module Lurker
@@ -38,3 +39,4 @@ def new(*)
 if defined?(ActionController::TestCase::Behavior)
   ActionController::TestCase::Behavior.send :include, Lurker::SpecHelper::Rails
 end
+
diff --git a/lib/lurker/spy.rb b/lib/lurker/spy.rb
index dda909d..82b2561 100644
--- a/lib/lurker/spy.rb
+++ b/lib/lurker/spy.rb
@@ -42,7 +42,7 @@ def endpoint_path
 
     def extensions
       extensions = {
-        path_params: request.path_params,
+        path_params: reordered_request_path_params,
         path_info: request.path_info,
         method: request.verb,
       }
@@ -88,5 +88,19 @@ def self.enabled?
     def self.current
       Thread.current[:lurker_spy]
     end
+
+    private
+
+    def reordered_request_path_params
+      other_params = request.path_params.reject do |k, _|
+        k == 'controller' || k == 'action'
+      end
+
+      {
+        'controller' => request.path_params['controller'],
+        'action' => request.path_params['action']
+      }.merge!(other_params)
+    end
   end
 end
+
diff --git a/lurker.gemspec b/lurker.gemspec
index 1fff8e4..2cda938 100644
--- a/lurker.gemspec
+++ b/lurker.gemspec
@@ -6,8 +6,8 @@ require "lurker/version"
 Gem::Specification.new do |spec|
   spec.name          = "lurker"
   spec.version       = Lurker::VERSION
-  spec.authors       = ["Vlad Bokov"]
-  spec.email         = ["bokov.vlad@gmail.com"]
+  spec.authors       = ["Vlad Bokov", "Sergey Fedorov"]
+  spec.email         = ["bokov.vlad@gmail.com", "oni.strech@gmail.com"]
   spec.summary       = %q{Get pretty, documented and visible API}
   spec.description   = %q{The new de-facto for API testing your Rails application}
   spec.homepage      = "http://github.com/razum2um/lurker"
@@ -54,4 +54,10 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency("execjs", "~> 2.0")
   spec.add_development_dependency("pdfkit", "~> 0.6")
   spec.add_development_dependency("wkhtmltopdf-binary", "~> 0.9")
+
+  if RUBY_VERSION >= "2.2.0"
+    # FIXME : this gem are needed to ruby 2.2.0
+    spec.add_development_dependency("test-unit", "~> 3.0")
+  end
 end
+
diff --git a/templates/generate_stuff.rb b/templates/generate_stuff.rb
index 99757cc..742b99e 100644
--- a/templates/generate_stuff.rb
+++ b/templates/generate_stuff.rb
@@ -294,12 +294,12 @@ class Api::V#{version}::ReposController < Api::V1::ReposController; end
     end
 
     require 'rack/cors' # FIXME
-    config.middleware.insert 0, Rack::Cors do
+    config.middleware.insert 0, "Rack::Cors" do
       allow do
-        origins 'localhost:3000', '127.0.0.1:3000', 'razum2um.github.io', 'lurker-app.herokuapp.com', 'lurker.razum2um.me'
+        origins %w[localhost:3000 127.0.0.1:3000 razum2um.github.io lurker-app.herokuapp.com lurker.razum2um.me]
         resource '*',
           :headers => :any,
-          :methods => :any,
+          :methods => [:get, :post, :delete, :put, :options, :head],
           :credentials => false,
           :expose => %w[Etag Server X-Content-Type-Options X-Frame-Options X-Request-Id X-Runtime
                         X-Xss-Protection Date Access-Control-Request-Method Access-Control-Allow-Origin
@@ -409,3 +409,4 @@ def teardown
     end
   CODE
 end
+
diff --git a/templates/lurker_app.rb b/templates/lurker_app.rb
index e59d382..0f025d0 100644
--- a/templates/lurker_app.rb
+++ b/templates/lurker_app.rb
@@ -69,3 +69,4 @@
     web: bundle exec unicorn -p $PORT -c ./config/unicorn.rb
   CODE
 end
+