testing new copy function
rewrite util.copy function to use 'fs-extra' npm module rather than vinyl-fs

the main issue was that vinyl-fs copies files in blobs,
and is not able to cherry pick files from multiple directories in the instance
where we want to disregard the dir structure
Update util.js

Remove test function export val
Merge pull request #36 from ajsnapshots/master

fix bug causing invalid PR