bin/guard in acumatica-0.2.1 vs bin/guard in acumatica-0.3.0

@@ -8,15 +8,15 @@
 # this file is here to facilitate running it.
 #
 
 require "pathname"
 ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+                                           Pathname.new(__FILE__).realpath)
 
-bundle_binstub = File.expand_path("../bundle", __FILE__)
+bundle_binstub = File.expand_path('bundle', __dir__)
 
 if File.file?(bundle_binstub)
-  if File.read(bundle_binstub, 150) =~ /This file was generated by Bundler/
+  if /This file was generated by Bundler/.match?(File.read(bundle_binstub, 150))
     load(bundle_binstub)
   else
     abort("Your `bin/bundle` was not generated by Bundler, so this binstub cannot run.
 Replace `bin/bundle` by running `bundle binstubs bundler --force`, then run this command again.")
   end