Merge pull request #70 from hoosin/patch-1

添加前端代码规范文档
增加Prolog， R， Vimscript三个分类
Merge pull request #71 from spacewander/patch-6

增加Prolog， R， Vimscript三个分类
Update README.md
Merge pull request #8 from justjavac/master

Update README.md