Clean up gulpfile.

Closes #40
Clean up gulpfile.

Closes #40
Amend merge
Make browserify vinyl streamable
Merge branch 'refs/heads/master' into gulpfile-cleanup

* refs/heads/master:
  Updated gulpfile.js to support image destination

Conflicts:
	gulpfile.js
Merge pull request #42 from LukeAskew/gulpfile-cleanup

Gulpfile cleanup