Added support for ClojureScript (.cljs) and Leniningen's cljx cross-compiler (.cljx) to --clojure
List all files on `ag -l` without arguments
Merge pull request #491 from gfxmonk/list_noquery

List all files on `ag -l` without arguments
Merge pull request #490 from KingMob/add-clojurescript-support

Added support for ClojureScript extensions to --clojure