Updated, rails optimized common rubocop configuration

.rubocop.yml

@@ -1,43 +1,39 @@
 Rails:
   Enabled: true
 
-Rails/ApplicationRecord:
-  Enabled: false
-
 AllCops:
   TargetRubyVersion: 2.1
+  TargetRailsVersion: 4.2
 
-Metrics/LineLength:
-  Max: 140
-
-# Offense count: 34
-# Configuration parameters: CountComments.
-Metrics/MethodLength:
-  Max: 60
-
-# Offense count: 11
-Metrics/CyclomaticComplexity:
-  Max: 13
-
-# Offense count: 10
-Metrics/PerceivedComplexity:
-  Max: 14
-
-# Offense count: 15
 Metrics/AbcSize:
   Max: 65
 
-Metrics/ModuleLength:
-  Max: 300
+Metrics/BlockLength:
+  Max: 50
 
 Metrics/ClassLength:
   Max: 300
 
+Metrics/CyclomaticComplexity:
+  Max: 13
+
+Metrics/LineLength:
+  Max: 140
+
+Metrics/MethodLength:
+  Max: 60
+
+Metrics/ModuleLength:
+  Max: 300
+
+Metrics/PerceivedComplexity:
+  Max: 14
+
+Rails/SkipsModelValidations:
+  Enabled: false
+
+Style/AutoResourceCleanup:
+  Enabled: true
+
 Style/Documentation:
   Enabled: false
-
-Rails/HttpPositionalArguments:
-  Enabled: false
-
-Metrics/BlockLength:
-  Max: 50