Remove RefererTracking indices. Update appraisals. remove Gemfile.lock.

This fixes mongodb error:
  Document Error: key for index ... too long for document ...

Appraisals

@@ -1,9 +1,9 @@
 appraise 'rails-3' do
-  gem 'rails', '~> 3.0'
-  gem 'mongoid', '~> 3.0'
+  gem 'rails', '~> 3.2.21'
+  gem 'mongoid', '~> 3.1.6'
 end
 
 appraise 'rails-4' do
-  gem 'rails', '~> 4.0.0'
-  gem 'mongoid', '~> 4.0.0.alpha1', github: 'mongoid/mongoid'
+  gem 'rails', '~> 4.0'
+  gem 'mongoid', '~> 4'
 end

Gemfile

@@ -3,3 +3,5 @@ gemspec
 
 # jquery-rails is used by the dummy application
 gem "jquery-rails"
+
+gem "responders"

app/models/re_track/referer_tracking.rb

@@ -15,8 +15,9 @@ class RefererTracking
     field :forwarded_ip,     type: String
     field :accept_language,  type: String
 
-    [:referer_url, :first_url, :user_agent, :first_visited_at, :ip,
-     :forwarded_ip, :accept_language].each { |field| index(field => 1) }
+    [
+      :user_agent, :first_visited_at, :ip, :forwarded_ip
+    ].each { |field| index(field => 1) }
 
     # Extract query parameters from referer_url and first_url.
     #

gemfiles/rails_3.gemfile

@@ -3,7 +3,8 @@
 source "https://rubygems.org/"
 
 gem "jquery-rails"
-gem "rails", "~> 3.0"
-gem "mongoid", "~> 3.0"
+gem "responders"
+gem "rails", "~> 3.2.21"
+gem "mongoid", "~> 3.1.6"
 
-gemspec :path=>"../"
+gemspec :path => "../"

gemfiles/rails_4.gemfile

@@ -3,7 +3,8 @@
 source "https://rubygems.org/"
 
 gem "jquery-rails"
-gem "rails", "~> 4.0.0"
-gem "mongoid", "~> 4.0.0.alpha1", :github=>"mongoid/mongoid"
+gem "responders"
+gem "rails", "~> 4.0"
+gem "mongoid", "~> 4"
 
-gemspec :path=>"../"
+gemspec :path => "../"

spec/controllers/referer_tracking_spec.rb

@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-describe UsersController, 'RefererTracking' do
+describe UsersController, 'RefererTracking', type: :controller do
   before :each do
     @request.env['HTTP_REFERER'] = @referer = 'awesome.pa.ge/believe/me'
     @request.env['HTTP_USER_AGENT'] = @ua = 'Fancy new UA'