Add Rubocop gem / config

Author: conroywhitney

.rubocop.yml

@@ -0,0 +1,66 @@
+# Common configuration.
+AllCops:
+  # Include common Ruby source files.
+  Include:
+    - '**/*.gemspec'
+    - '**/*.podspec'
+    - '**/*.jbuilder'
+    - '**/*.rake'
+    - '**/*.opal'
+    - '**/config.ru'
+    - '**/Gemfile'
+    - '**/Rakefile'
+    - '**/Capfile'
+    - '**/Podfile'
+    - '**/Thorfile'
+    - '**/Vagrantfile'
+    - '**/Berksfile'
+    - '**/Cheffile'
+    - '**/Vagabondfile'
+  Exclude:
+    - 'vendor/**/*'
+    - 'config/**/*'
+    - 'db/**/*'
+    - 'Gemfile*'
+    - 'bin/**/*'
+    - 'Guardfile*'
+
+  # Cop names are not displayed in offense messages by default. Change behavior
+  # by overriding DisplayCopNames, or by giving the -D/--display-cop-names
+  # option.
+  DisplayCopNames: true
+  # Style guide URLs are not displayed in offense messages by default. Change
+  # behavior by overriding DisplayStyleGuide, or by giving the
+  # -S/--display-style-guide option.
+  DisplayStyleGuide: true
+  # Additional cops that do not reference a style guide rule may be enabled by
+  # default. Change behavior by overriding StyleGuideCopsOnly, or by giving
+  # the --only-guide-cops option.
+  StyleGuideCopsOnly: false
+  # All cops except the ones in disabled.yml are enabled by default. Change
+  # this behavior by overriding DisabledByDefault. When DisabledByDefault is
+  # true, all cops in the default configuration are disabled, and and only cops
+  # in user configuration are enabled. This makes cops opt-in instead of
+  # opt-out. Note that when DisabledByDefault is true, cops in user
+  # configuration will be enabled even if they don't set the Enabled parameter.
+  DisabledByDefault: false
+  # Enables the result cache if true. Can be overridden by the --cache command
+  # line option.
+  UseCache: true
+  # Threshold for how many files can be stored in the result cache before some
+  # of the files are automatically removed.
+  MaxFilesInCache: 20000
+  # The cache will be stored in "rubocop_cache" under this directory. The name
+  # "/tmp" is special and will be converted to the system temporary directory,
+  # which is "/tmp" on Unix-like systems, but could be something else on other
+  # systems.
+  CacheRootDirectory: /tmp
+
+Metrics/LineLength:
+  Max: 80
+
+Style/Documentation:
+  Enabled: false
+
+Style/StringLiterals:
+  Enabled: false

Gemfile

@@ -3,3 +3,4 @@
 source "https://rubygems.org"
 
 gem 'rspec'
+gem 'rubocop'

Gemfile.lock

@@ -1,7 +1,12 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    ast (2.2.0)
     diff-lcs (1.2.5)
+    parser (2.3.0.2)
+      ast (~> 2.2)
+    powerpack (0.1.1)
+    rainbow (2.1.0)
     rspec (3.4.0)
       rspec-core (~> 3.4.0)
       rspec-expectations (~> 3.4.0)
@@ -15,12 +20,19 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.4.0)
     rspec-support (3.4.1)
+    rubocop (0.36.0)
+      parser (>= 2.3.0.0, < 3.0)
+      powerpack (~> 0.1)
+      rainbow (>= 1.99.1, < 3.0)
+      ruby-progressbar (~> 1.7)
+    ruby-progressbar (1.7.5)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   rspec
+  rubocop
 
 BUNDLED WITH
    1.12.5