Add Code Climate Config (thoughtbot#2275)

Adds a Code Climate configuration enabling Fixme, Rubocop, and
Duplication.

The Code Climate RuboCop engine uses a newer version of RuboCop than the
current Hound config, so .hound.yml was modified to work for both. The
only notable change was removing PreferredHashMethods because there is
no syntax for that cop that works with bout Hound and Code Climate.

.codeclimate.yml

@@ -0,0 +1,17 @@
+---
+engines:
+  duplication:
+    enabled: true
+    config:
+      languages:
+      - ruby
+  fixme:
+    enabled: true
+  rubocop:
+    enabled: true
+ratings:
+  paths:
+  - "**.rb"
+exclude_paths:
+- features/
+- spec/

.hound.yml

@@ -20,7 +20,8 @@ AllCops:
     - "db/schema.rb"
     - 'vendor/**/*'
     - 'gemfiles/vendor/**/*'
-  RunRailsCops: false
+  Rails:
+    Enabled: false
   DisplayCopNames: false
   StyleGuideCopsOnly: false
 Style/AccessModifierIndentation:
@@ -434,7 +435,7 @@ Style/TrailingBlankLines:
   SupportedStyles:
   - final_newline
   - final_blank_line
-Style/TrailingComma:
+Style/TrailingCommaInLiteral:
   Description: Checks for trailing comma in parameter lists and literals.
   StyleGuide: https://github.com/bbatsov/ruby-style-guide#no-trailing-array-commas
   Enabled: false
@@ -560,11 +561,6 @@ Rails/ActionFilter:
   - filter
   Include:
   - app/controllers/**/*.rb
-Rails/DefaultScope:
-  Description: Checks if the argument passed to default_scope is a block.
-  Enabled: true
-  Include:
-  - app/models/**/*.rb
 Rails/HasAndBelongsToMany:
   Description: Prefer has_many :through to has_and_belongs_to_many.
   Enabled: true
@@ -685,10 +681,6 @@ Style/DefWithParentheses:
   Description: Use def with parentheses when there are arguments.
   StyleGuide: https://github.com/bbatsov/ruby-style-guide#method-parens
   Enabled: true
-Style/DeprecatedHashMethods:
-  Description: Checks for use of deprecated Hash methods.
-  StyleGuide: https://github.com/bbatsov/ruby-style-guide#hash-key
-  Enabled: false
 Style/Documentation:
   Description: Document classes and non-namespace modules.
   Enabled: false
@@ -840,7 +832,7 @@ Style/SelfAssignment:
     used.
   StyleGuide: https://github.com/bbatsov/ruby-style-guide#self-assignment
   Enabled: false
-Style/SingleSpaceBeforeFirstArg:
+Style/SpaceBeforeFirstArg:
   Description: Checks that exactly one space is used between a method name and the
     first argument for method calls without parentheses.
   Enabled: true
@@ -852,7 +844,7 @@ Style/SpaceAfterComma:
   Description: Use spaces after commas.
   StyleGuide: https://github.com/bbatsov/ruby-style-guide#spaces-operators
   Enabled: true
-Style/SpaceAfterControlKeyword:
+Style/SpaceAroundKeyword:
   Description: Use spaces after if/elsif/unless/while/until/case/when.
   Enabled: true
 Style/SpaceAfterMethodName:
@@ -881,9 +873,6 @@ Style/SpaceAroundOperators:
   Description: Use spaces around operators.
   StyleGuide: https://github.com/bbatsov/ruby-style-guide#spaces-operators
   Enabled: true
-Style/SpaceBeforeModifierKeyword:
-  Description: Put a space before the modifier keyword.
-  Enabled: true
 Style/SpaceInsideBrackets:
   Description: No spaces after [ or before ].
   StyleGuide: https://github.com/bbatsov/ruby-style-guide#no-spaces-braces