duowan fix
iqiyi&other fix
Update background.js
sohu&letv_skins fix
还原，有错误!未定义baesite
跟进跨域新代码！修复部分错误~
更近跨域代码！
添加css文件关联项目
Create custom.css
Update script.js
Update README.md
Update README.md
Update README.md
Merge remote-tracking branch 'remotes/origin/master'

Conflicts:
	README.md
	background.js
	css/custom.css
	script.js