Update readme for es6, fix some broken formatting, add link to contibutors.md
Update readme for es6, fix some broken formatting, add link to contibutors.md

beni55/sublime-jsdocs,kumasento/sublime-jsdocs,gerardroche/sublime-jsdocs,Jchavez/sublime-jsdocs,beni55/sublime-jsdocs,kumasento/sublime-jsdocs,spadgos/sublime-jsdocs,Jchavez/sublime-jsdocs,spadgos/sublime-jsdocs,zhelezko/sublime-jsdocs,VELVETDETH/sublime-jsdocs,zhelezko/sublime-jsdocs,VELVETDETH/sublime-jsdocs