Add .rubocop.yml

.rubocop.yml

@@ -0,0 +1,32 @@
+# Stolen from https://gist.github.com/jhass/a5ae80d87f18e53e7b56
+AllCops:
+  Exclude:
+    - "bin/**/*"
+    - "db/schema.rb"
+
+# Enable Rails
+Rails:
+  Enabled: true
+
+# Commonly used screens these days easily fit more than 80 characters.
+Metrics/LineLength:
+  Max: 120
+
+# Too short methods lead to extraction of single-use methods, which can make
+# the code easier to read (by naming things), but can also clutter the class
+Metrics/MethodLength:
+  Exclude:
+    - "db/migrate/*"
+  Max: 20
+
+# The guiding principle of classes is SRP, SRP can't be accurately measured by LoC
+Metrics/ClassLength:
+  Max: 1500
+Metrics/ModuleLength:
+  Max: 1500
+
+# Raise AbcSize from 15 to 20
+Metrics/AbcSize:
+  Exclude:
+    - "db/migrate/*"
+  Max: 20