Adding link to pushgo for godep
use gpm instead of godep

* godep proved to be a bit ornery when trying to update packages. gpm,
  frankly, isn't much better, but is far less picky about directory
  paths and package locations.
Merge branch 'dev' of github.com:mozilla-services/pushgo into dev
Merge branch 'dev' into gpm

Conflicts:
	Godeps
	Godeps/Godeps.json
	Makefile
Added NOTES & cleaned up toys
Fix missed merge glitch
Merging #87.