Rakefile in dri-0.1.3 vs Rakefile in dri-0.2.0

@@ -1,6 +1,8 @@
+# frozen_string_literal: true
+
 require "bundler/gem_tasks"
 require "rspec/core/rake_task"
 
 RSpec::Core::RakeTask.new(:spec)
 
-task :default => :spec
+task default: :spec