hello world script

hello world脚本，用于测试环境是否OK

This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://greasyfork.org/scripts/428401-hello-world-script/code/hello%20world%20script.js?version=943722 

//hello world脚本，用于测试环境是否OK
alert('hi~')