Add .gitattributes file
Fixed issue with get-id returning nil

Updated to latest version of clojure, clojurescript, dommy and
lein-cljsbuild which exposed an issue with get-id returning nil. Not
sure why new-id was being keywordized in get-id. I opted to just return
new-id and that resolved the issue.
Merge pull request #1 from frankhale/master

Fixed issue with get-id returning nil