boot.rb in snake-eyes-2.0.0

- old
+ new

@@ -1,5 +1,7 @@
+# frozen_string_literal: true
+
 # Set up gems listed in the Gemfile.
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../../../Gemfile', __FILE__)
+ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../../Gemfile', __dir__)
 
 require 'bundler/setup' if File.exist?(ENV['BUNDLE_GEMFILE'])
-$LOAD_PATH.unshift File.expand_path('../../../../lib', __FILE__)
+$LOAD_PATH.unshift File.expand_path('../../../lib', __dir__)