Inherit rubocop config from discourse repo

.gitignore

@@ -5,3 +5,4 @@ auto_generated
 Gemfile.lock
 .DS_Store
 *.swp
+.rubocop-https---raw-githubusercontent-com-discourse-discourse-master--rubocop-yml

.rubocop.yml

@@ -1,113 +1 @@
-AllCops:
+inherit_from: https://raw.githubusercontent.com/discourse/discourse/master/.rubocop.yml
-  TargetRubyVersion: 2.4
-  DisabledByDefault: true
-  Exclude:
-    - 'db/schema.rb'
-    - 'bundle/**/*'
-    - 'vendor/**/*'
-    - 'node_modules/**/*'
-    - 'public/**/*'
-
-# Prefer &&/|| over and/or.
-Style/AndOr:
-  Enabled: true
-
-# Do not use braces for hash literals when they are the last argument of a
-# method call.
-Style/BracesAroundHashParameters:
-  Enabled: true
-
-# Align `when` with `case`.
-Layout/CaseIndentation:
-  Enabled: true
-
-# Align comments with method definitions.
-Layout/CommentIndentation:
-  Enabled: true
-
-# No extra empty lines.
-Layout/EmptyLines:
-  Enabled: true
-
-# Use Ruby >= 1.9 syntax for hashes. Prefer { a: :b } over { :a => :b }.
-Style/HashSyntax:
-  Enabled: true
-
-# Two spaces, no tabs (for indentation).
-Layout/IndentationWidth:
-  Enabled: true
-
-Layout/SpaceAfterColon:
-  Enabled: true
-
-Layout/SpaceAfterComma:
-  Enabled: true
-
-Layout/SpaceAroundEqualsInParameterDefault:
-  Enabled: true
-
-Layout/SpaceAroundKeyword:
-  Enabled: true
-
-Layout/SpaceAroundOperators:
-  Enabled: true
-
-Layout/SpaceBeforeFirstArg:
-    Enabled: true
-
-# Defining a method with parameters needs parentheses.
-Style/MethodDefParentheses:
-  Enabled: true
-
-# Use `foo {}` not `foo{}`.
-Layout/SpaceBeforeBlockBraces:
-  Enabled: true
-
-# Use `foo { bar }` not `foo {bar}`.
-Layout/SpaceInsideBlockBraces:
-  Enabled: true
-
-# Use `{ a: 1 }` not `{a:1}`.
-Layout/SpaceInsideHashLiteralBraces:
-  Enabled: true
-
-Layout/SpaceInsideParens:
-  Enabled: true
-
-# Detect hard tabs, no hard tabs.
-Layout/Tab:
-  Enabled: true
-
-# Blank lines should not have any spaces.
-Layout/TrailingBlankLines:
-  Enabled: true
-
-# No trailing whitespace.
-Layout/TrailingWhitespace:
-  Enabled: true
-
-Lint/Debugger:
-  Enabled: true
-
-Lint/BlockAlignment:
-  Enabled: true
-
-# Align `end` with the matching keyword or starting expression except for
-# assignments, where it should be aligned with the LHS.
-Lint/EndAlignment:
-  Enabled: true
-  EnforcedStyleAlignWith: variable
-
-# Use my_method(my_arg) not my_method( my_arg ) or my_method my_arg.
-Lint/RequireParentheses:
-  Enabled: true
-
-Layout/MultilineMethodCallIndentation:
-  Enabled: true
-  EnforcedStyle: indented
-
-Layout/AlignHash:
-  Enabled: true
-
-Bundler/OrderedGems:
-  Enabled: false