Add Style enforcer (via Rubocop)

It will fail the build, but as it is currently,
most of the cops are 'todos'. Great for new contributors.. :)

.rubocop.yml

@@ -0,0 +1,49 @@
+inherit_from: .rubocop_todo.yml
+
+AllCops:
+  Exclude:
+    - config/initializers/forbidden_yaml.rb
+    - !ruby/regexp /(vendor|bundle|bin|db)\/.*/
+  RunRailsCops: true
+  DisplayCopNames: true
+  DisplayStyleGuide: true
+
+Lint/NestedMethodDefinition:
+  Enabled: false
+  Exclude:
+    - test/action_controller/serialization_test.rb
+
+Style/StringLiterals:
+  EnforcedStyle: single_quotes
+
+Metrics/AbcSize:
+  Max: 35 # TODO: Lower to 15
+
+Metrics/ClassLength:
+  Max: 261 # TODO: Lower to 100
+  Exclude:
+    - test/**/*.rb
+
+Metrics/CyclomaticComplexity:
+  Max: 7 # TODO: Lower to 6
+
+Metrics/LineLength:
+  Max: 251 # TODO: Lower to 80
+
+Metrics/MethodLength:
+  Max: 106 # TODO: Lower to 10
+
+Metrics/PerceivedComplexity:
+  Max: 9 # TODO: Lower to 7
+
+Style/AlignParameters:
+  EnforcedStyle: with_fixed_indentation
+
+Style/ClassAndModuleChildren:
+  EnforcedStyle: compact
+
+Style/Documentation:
+  Enabled: false
+
+Style/MultilineOperationIndentation:
+  EnforcedStyle: indented

.rubocop_todo.yml

@@ -0,0 +1,347 @@
+# This configuration was generated by `rubocop --auto-gen-config`
+# on 2015-08-30 23:03:50 -0500 using RuboCop version 0.31.0.
+# The point is for the user to remove these configuration records
+# one by one as the offenses are removed from the code base.
+# Note that changes in the inspected code, or installation of new
+# versions of RuboCop, may require this file to be generated again.
+
+# Offense count: 1
+# Configuration parameters: AllowSafeAssignment.
+Lint/AssignmentInCondition:
+  Enabled: false
+
+# Offense count: 1
+Lint/EmptyEnsure:
+  Enabled: false
+
+# Offense count: 1
+Lint/HandleExceptions:
+  Enabled: false
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Lint/UnusedBlockArgument:
+  Enabled: false
+
+# Offense count: 9
+# Cop supports --auto-correct.
+Lint/UnusedMethodArgument:
+  Enabled: false
+
+# Offense count: 1
+Lint/UselessAccessModifier:
+  Enabled: false
+
+# Offense count: 3
+Lint/UselessAssignment:
+  Enabled: false
+
+# Offense count: 1
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Rails/Date:
+  Enabled: false
+
+# Offense count: 8
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Rails/TimeZone:
+  Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/AccessModifierIndentation:
+  Enabled: false
+
+# Offense count: 16
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedHashRocketStyle, EnforcedColonStyle, EnforcedLastArgumentHashStyle, SupportedLastArgumentHashStyles.
+Style/AlignHash:
+  Enabled: false
+
+# Offense count: 6
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/AlignParameters:
+  Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/AndOr:
+  Enabled: false
+
+# Offense count: 6
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles, ProceduralMethods, FunctionalMethods, IgnoredMethods.
+Style/BlockDelimiters:
+  Enabled: false
+
+# Offense count: 46
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/BracesAroundHashParameters:
+  Enabled: false
+
+# Offense count: 167
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/ClassAndModuleChildren:
+  Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/CommentIndentation:
+  Enabled: false
+
+# Offense count: 1
+Style/DoubleNegation:
+  Enabled: false
+
+# Offense count: 1
+Style/EachWithObject:
+  Enabled: false
+
+# Offense count: 4
+# Cop supports --auto-correct.
+Style/EmptyLines:
+  Enabled: false
+
+# Offense count: 3
+# Cop supports --auto-correct.
+Style/EmptyLinesAroundAccessModifier:
+  Enabled: false
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/EmptyLinesAroundBlockBody:
+  Enabled: false
+
+# Offense count: 16
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/EmptyLinesAroundClassBody:
+  Enabled: false
+
+# Offense count: 9
+# Cop supports --auto-correct.
+Style/EmptyLinesAroundMethodBody:
+  Enabled: false
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/EmptyLinesAroundModuleBody:
+  Enabled: false
+
+# Offense count: 3
+# Configuration parameters: MinBodyLength.
+Style/GuardClause:
+  Enabled: false
+
+# Offense count: 12
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles, UseHashRocketsWithSymbolValues.
+Style/HashSyntax:
+  Enabled: false
+
+# Offense count: 9
+# Cop supports --auto-correct.
+Style/IndentArray:
+  Enabled: false
+
+# Offense count: 8
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/IndentHash:
+  Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/IndentationConsistency:
+  Enabled: false
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: Width.
+Style/IndentationWidth:
+  Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/Lambda:
+  Enabled: false
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Style/MethodCallParentheses:
+  Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/MethodDefParentheses:
+  Enabled: false
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/MultilineOperationIndentation:
+  Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/NegatedIf:
+  Enabled: false
+
+# Offense count: 1
+# Configuration parameters: EnforcedStyle, MinBodyLength, SupportedStyles.
+Style/Next:
+  Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/NumericLiterals:
+  MinDigits: 7
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: PreferredDelimiters.
+Style/PercentLiteralDelimiters:
+  Enabled: false
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Style/PerlBackrefs:
+  Enabled: false
+
+# Offense count: 6
+# Configuration parameters: NamePrefix, NamePrefixBlacklist.
+Style/PredicateName:
+  Enabled: false
+
+# Offense count: 7
+# Cop supports --auto-correct.
+Style/RedundantSelf:
+  Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: AllowAsExpressionSeparator.
+Style/Semicolon:
+  Enabled: false
+
+# Offense count: 6
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/SignalException:
+  Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: AllowIfMethodIsEmpty.
+Style/SingleLineMethods:
+  Enabled: false
+
+# Offense count: 26
+# Cop supports --auto-correct.
+Style/SpaceAfterColon:
+  Enabled: false
+
+# Offense count: 7
+# Cop supports --auto-correct.
+Style/SpaceAfterComma:
+  Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/SpaceAfterNot:
+  Enabled: false
+
+# Offense count: 5
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/SpaceAroundEqualsInParameterDefault:
+  Enabled: false
+
+# Offense count: 39
+# Cop supports --auto-correct.
+# Configuration parameters: MultiSpaceAllowedForOperators.
+Style/SpaceAroundOperators:
+  Enabled: false
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/SpaceBeforeBlockBraces:
+  Enabled: false
+
+# Offense count: 8
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles, EnforcedStyleForEmptyBraces, SpaceBeforeBlockParameters.
+Style/SpaceInsideBlockBraces:
+  Enabled: false
+
+# Offense count: 20
+# Cop supports --auto-correct.
+Style/SpaceInsideBrackets:
+  Enabled: false
+
+# Offense count: 179
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces, SupportedStyles.
+Style/SpaceInsideHashLiteralBraces:
+  Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/SpaceInsideParens:
+  Enabled: false
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/StringLiteralsInInterpolation:
+  Enabled: false
+
+# Offense count: 1
+Style/StructInheritance:
+  Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: IgnoredMethods.
+Style/SymbolProc:
+  Enabled: false
+
+# Offense count: 9
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+Style/TrailingBlankLines:
+  Enabled: false
+
+# Offense count: 6
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyleForMultiline, SupportedStyles.
+Style/TrailingComma:
+  Enabled: false
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Style/TrailingWhitespace:
+  Enabled: false
+
+# Offense count: 1
+Style/UnlessElse:
+  Enabled: false
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Style/UnneededPercentQ:
+  Enabled: false
+
+# Offense count: 4
+# Cop supports --auto-correct.
+# Configuration parameters: WordRegex.
+Style/WordArray:
+  MinSize: 2