Merge pull request #1449 from sunny-b/master

Enable Performance/StringReplacement Rubocop cop

.rubocop.yml

@@ -104,7 +104,7 @@ Style/TrailingBlankLines:
 Style/TrailingWhitespace:
   Enabled: true
 
-#This cop checks for numeric comparisons that can be replaced by a predicate method.
+# This cop checks for numeric comparisons that can be replaced by a predicate method.
 Style/ZeroLengthPredicate:
   Enabled: true
 
@@ -183,3 +183,9 @@ Rails:
 # Avoid use of old-style attribute validation
 Rails/Validation:
   Enabled: true
+
+#################### Performance ###############################
+
+# Identifies places where gsub can be replaced by tr or delete.
+Performance/StringReplacement:
+  Enabled: true

.rubocop_todo.yml

@@ -48,12 +48,6 @@ Metrics/ModuleLength:
 Metrics/PerceivedComplexity:
   Max: 15
 
-# Offense count: 1
-# Cop supports --auto-correct.
-Performance/StringReplacement:
-  Exclude:
-    - 'spec/support/save_feature_failures.rb'
-
 # Offense count: 13
 # Cop supports --auto-correct.
 # Configuration parameters: EnforcedStyle, SupportedStyles, Include.