Gemfile in queue-bus-0.9.0 vs Gemfile in queue-bus-0.9.1

- old
+ new

@@ -1,5 +1,7 @@
-source "http://rubygems.org"
+# frozen_string_literal: true
 
+source 'http://rubygems.org'
+
 gemspec
 
-gem "rake"
+gem 'rake'