Rakefile in onebox-1.8.89 vs Rakefile in onebox-1.8.90

@@ -1,5 +1,7 @@
 #!/usr/bin/env rake
+# frozen_string_literal: true
+
 require "rspec/core/rake_task"
 require 'bundler'
 
 begin
   Bundler.setup :default, :development