Add RuboCop

.rubocop.yml

@@ -2,16 +2,23 @@ AllCops:
   Includes:
     - 'Gemfile'
     - 'Rakefile'
-    - 'twitter.gemspec'
+  Excludes:
+    - 'db/schema.rb'
 
 # Avoid long parameter lists
 ParameterLists:
   Max: 4
   CountKeywordArgs: true
 
+ClassLength:
+  Max: 100
+
+LineLength:
+  Enabled: false
+
 MethodLength:
   CountComments: false
-  Max: 14
+  Max: 15
 
 # Avoid more than `Max` levels of nesting.
 BlockNesting:
@@ -25,15 +32,11 @@ CollectionMethods:
     find:     'detect'
     find_all: 'select'
 
-# Limit line length
-LineLength:
-  Enabled: false
-
 # Disable documentation checking until a class needs to be documented once
 Documentation:
   Enabled: false
 
-# Enforce Ruby 1.8-compatible hash syntax
+# Enforce Ruby 1.9-compatible hash syntax
 HashSyntax:
   EnforcedStyle: ruby19
 
@@ -67,3 +70,32 @@ CaseIndentation:
 
 Lambda:
   Enabled: false
+
+RaiseArgs:
+  EnforcedStyle: compact
+
+TrailingComma:
+  Enabled: false
+
+DoubleNegation:
+  Enabled: false
+
+PercentLiteralDelimiters:
+  PreferredDelimiters:
+    '%':  ()
+    '%i': ()
+    '%q': ()
+    '%Q': ()
+    '%r': '{}'
+    '%s': ()
+    '%w': '[]'
+    '%W': '[]'
+    '%x': ()
+
+WordArray:
+  Exclude:
+    - 'app/helpers/application_helper.rb'
+
+NumericLiterals:
+  Exclude:
+    - 'db/seeds.rb'

Gemfile

@@ -33,6 +33,7 @@ end
 
 group :test do
   gem 'coveralls', require: false
+  gem 'rubocop'
   gem 'simplecov', require: false
   gem 'sqlite3'
   gem 'webmock'

Gemfile.lock

@@ -27,6 +27,7 @@ GEM
       tzinfo (~> 0.3.37)
     addressable (2.3.6)
     arel (4.0.2)
+    ast (1.1.0)
     atomic (1.1.16)
     bcrypt (3.1.7)
     builder (3.1.4)
@@ -86,8 +87,12 @@ GEM
     nokogiri (1.6.1)
       mini_portile (~> 0.5.0)
     orm_adapter (0.5.0)
+    parser (2.1.7)
+      ast (~> 1.1)
+      slop (~> 3.4, >= 3.4.5)
     pg (0.17.1)
     polyglot (0.3.4)
+    powerpack (0.0.9)
     pry (0.9.12.6)
       coderay (~> 1.0)
       method_source (~> 0.8)
@@ -132,10 +137,18 @@ GEM
       activesupport (= 4.0.4)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
+    rainbow (2.0.0)
     rake (10.2.2)
     remotipart (1.2.1)
     rest-client (1.6.7)
       mime-types (>= 1.16)
+    rubocop (0.19.1)
+      json (>= 1.7.7, < 2)
+      parser (~> 2.1.7)
+      powerpack (~> 0.0.6)
+      rainbow (>= 1.99.1, < 3.0)
+      ruby-progressbar (~> 1.4)
+    ruby-progressbar (1.4.2)
     safe_yaml (1.0.1)
     sass (3.3.4)
     sass-rails (4.0.1)
@@ -198,6 +211,7 @@ DEPENDENCIES
   rails (~> 4.0.4)
   rails_12factor
   rails_admin
+  rubocop
   sass-rails
   simplecov
   sqlite3