rails_4.2.gemfile in webhook_system-2.4.0

- old
+ new

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 source "https://rubygems.org"
 
 gem "rails", "~> 4.2.11"
 gem "sqlite3", "~> 1.3.6"
 