Add Rubocop config file

.rubocop.yml

@@ -0,0 +1,29 @@
+AllCops:
+  Include:
+    - '**/Rakefile'
+    - '**/config.ru'
+  Exclude:
+    - 'db/**/*'
+    - 'config/**/*'
+    - 'script/**/*'
+    - 'spec/**/*'
+    - !ruby/regexp /old_and_unused\.rb$/
+
+Documentation:
+  Enabled: false
+
+Style/EmptyLinesAroundClassBody:
+  Enabled: false
+
+Style/BracesAroundHashParameters:
+  Enabled: false
+  
+Metrics/LineLength:
+  Enabled: false
+  Max: 120
+
+MethodLength:
+  Enabled: false
+
+StringLiterals:
+  Enabled: false