Update bower.json
Update bower.json

bower install error for a comma
hoangkien/bootstrap-rtl,bahtiyara/bootstrap-rtl,ImanMh/bootstrap-rtl,slang-group/bootstrap-rtl,croscon/bootstrap-rtl,sharawy/bootstrap-rtl,mmdsharifi/bootstrap-rtl-sass,voltan/bootstrap-rtl,hoangkien/bootstrap-rtl,bright/bootstrap-rtl,MenZil/bootstrap-rtl,croscon/bootstrap-rtl,slang-group/bootstrap-rtl,prium/bootstrap-rtl