use better ext regexes
use better ext regexes

No need to match entire string, just the end.
Ignore case.
See http://jsperf.com/regex-match-all-or-end-only

Glavin001/atom-preview,lasaro-dumer/atom-preview,lasaro-dumer/atom-preview,zuren/atom-preview,lasaro-dumer/atom-preview,zuren/atom-preview,Glavin001/atom-preview,Glavin001/atom-preview,zuren/atom-preview