exe/u3d in u3d-1.2.3 vs exe/u3d in u3d-1.3.0

@@ -1,6 +1,8 @@
 #!/usr/bin/env ruby
-$LOAD_PATH.push File.expand_path('../../lib', __FILE__)
+# frozen_string_literal: true
+
+$LOAD_PATH.push File.expand_path('../lib', __dir__)
 
 require 'u3d'
 require 'u3d/commands_generator'
 
 U3d::CommandsGenerator.start