Guardfile in creditsafe-0.2.0 vs Guardfile in creditsafe-0.3.0

@@ -1,4 +1,5 @@
+# frozen_string_literal: true
 # A sample Guardfile
 # More info at https://github.com/guard/guard#readme
 
 ## Uncomment and set this to only include directories you want to watch
 # directories %w(app lib config test spec features) \