Add rake, rspec and rack-test gems; add Rakefile with spec task

Gemfile

@@ -4,4 +4,10 @@ gem 'sinatra','~> 1.4.2'
 gem 'redis','~> 3.0.4'
 gem 'hiredis', '~> 0.4.5'
 gem 'json', '~> 1.7.7'
-gem 'ruby-hmac', '~> 0.4.0'
+gem 'ruby-hmac', '~> 0.4.0'
+
+group :development, :test do
+  gem 'rake'
+  gem 'rspec'
+  gem 'rack-test'
+end

Gemfile.lock

@@ -1,12 +1,24 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    diff-lcs (1.2.4)
     hiredis (0.4.5)
     json (1.7.7)
     rack (1.5.2)
     rack-protection (1.5.0)
       rack
+    rack-test (0.6.2)
+      rack (>= 1.0)
+    rake (10.0.4)
     redis (3.0.4)
+    rspec (2.13.0)
+      rspec-core (~> 2.13.0)
+      rspec-expectations (~> 2.13.0)
+      rspec-mocks (~> 2.13.0)
+    rspec-core (2.13.1)
+    rspec-expectations (2.13.0)
+      diff-lcs (>= 1.1.3, < 2.0)
+    rspec-mocks (2.13.1)
     ruby-hmac (0.4.0)
     sinatra (1.4.2)
       rack (~> 1.5, >= 1.5.2)
@@ -18,8 +30,11 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  hiredis
-  json
-  redis
-  ruby-hmac
-  sinatra
+  hiredis (~> 0.4.5)
+  json (~> 1.7.7)
+  rack-test
+  rake
+  redis (~> 3.0.4)
+  rspec
+  ruby-hmac (~> 0.4.0)
+  sinatra (~> 1.4.2)

Rakefile

@@ -0,0 +1,7 @@
+require 'rspec/core'
+require 'rspec/core/rake_task'
+
+task :default => :spec
+
+desc "Run all specs in spec directory (excluding plugin specs)"
+RSpec::Core::RakeTask.new(:spec)