Add a note about the purpose of vimrc.before
Add a note about the purpose of vimrc.before

spf13/spf13-vim,alex-zhang/spf13-vim,pavgup/spf13-vim,farrrr/far-vim,wangbiaobiao/spf13-vim,jimgle/spf13-vim,qingzew/spf13-vim,mightyguava/spf13-vim,dawnsong/spf13-vim,darcylee/magic-vim,francoisjacques/spf13-vim,codedogfish/spf13-vim,taohaoge/spf13-vim,chenshuiyin/spf13-vim,teasp00n/spf13-vim,pjvds/spf13-vim,raincoatrun/spf13-vim,theand/spf13-vim,xuzhenglun/spf13-vim,liuyun1217/spf13-vim,Eastegg/My-spf13,huhuang03/spf13-vim,caibo2014/spf13-vim,millerdw06/spf13-vim,sit-in/spf13-vim,bronzehedwick/spf13-vim,dawnsong/spf13-vim,Anden/spf13-vim,russellb/spf13-vim,mikezuff/spf13-vim,lzhenyu0/spf13-vim,sreadfox/spf13-vim,zhlinh/spf13-vim,nacerix/vim-install,brg-liuwei/spf13-vim,bucketzxm/spf13-vim,RiceParty/spf13-vim,yangao118/spf13-vim,chenpiao/spf13-vim,Denniskevin/spf13-vim,lhh411291769/spf13-vim,Eastegg/My-spf13,taogogo/spf13-vim,dawnsong/spf13-vim,IdVincentYang/spf13-vim,lisijie/spf13-vim,wongsyrone/spf13-vim,mirans-tec/spf13-vim,taohs/spf13-vim,phlizik/spf13-vim,all3n/spf13-vim,osxi/spf13-vim,AkemiHomura/VimConf,ArkBriar/VimConf,qingzew/spf13-vim,JanChw/spf13-vim,amorwilliams/spf13-vim,ArkBriar/VimConf,r3jack/spf13-vim,dawnsong/spf13-vim,Ph0enixxx/spf13-vim,heartsentwined/spf13-vim,ZiboWang/spf13-vim,Mucid/spf13-vim,paddy-w/spf13-vim,qingzew/spf13-vim,zzzzzsh/spf13-vim,wenzhucjy/spf13-vim,dengyh/spf13-vim,haoli001/spf13-vim,rewiko/conf-vim,frtmelody/spf13-vim,dawnsong/spf13-vim,NoviaDroid/spf13-vim,dawnsong/spf13-vim,kumasento/spf13-vim,botord/spf13-vim,yougth/spf13-vim,zhangtuoparis13/spf13-vim,Alkaid-seven/spf13-vim,sunshinemyson/spf13-vim,carakan/supra-vim,zacchen/spf13-vim,kevinushey/spf13-vim,Frank1993/spf13-vim,cgideon/spf13-vim,zachywang/spf13-vim,0xItx/spf13-vim,dawnsong/spf13-vim,nevernet/spf13-vim,Acanthostega/spf13-vim,dawnsong/spf13-vim,veelion/spf13-vim,dawnsong/spf13-vim,demon386/spf13-vim,chrxn/spf13-vim,Alexoner/spf13-vim,anto-daniel/spf13-vim,pietrushnic/spf13-vim,cklsoft/spf13-vim,libichong/spf13-vim,dawnsong/spf13-vim,dawnsong/spf13-vim,Xiaolang0/spf13-vim,qingzew/spf13-vim,Chuenfai/spf13-vim,jadewizard/spf13-vim,leitu/spf13-vim,wmudge/spf13-vim,mmikitka/spf13-vim,pebcac/spf13-vim,fuhongxue/spf13-vim,lightcn/spf13-vim,dawnsong/spf13-vim,jf87/spf13-vim,diogro/spf13-vim,metcalfc/spf13-vim,lanffy/spf13-vim,lk1ngaa7/spf13-vim,Eastegg/My-spf13,perfectworks/pw-vim,jswk/spf13-vim,tttlkkkl/spf13-vim,xiaoDC/vim,qiufozhe/spf13-vim,AkemiHomura/VimConf,hahaliu005/spf13-vim,IdVincentYang/spf13-vim,chenyaqiuqiu/spf13-vim,cyberyoung/spf13-vim,myself659/spf13-vim,yograf/spf13-vim,chenzhongjie/.spf13-vim,nxsy/spf13-vim,AaronYee/spf13-vim,ucfree/spf13-vim,u9520107/spf13-vim,ProteusCortex/spf13-vim,dawnsong/spf13-vim,konqui/spf13-vim,samwangzhibo/spf13-vim,dawnsong/spf13-vim,shaunstanislaus/spf13-vim,toejough/spf13-vim,dawnsong/spf13-vim,myszek123/spf13-vim,14roiron/spf13-vim,y8y/my-spf13-vim