use a second dummy generator instead of gen-ang

The second generator is almost a real generator. Only thing keeping it from being a real boy is it doing something. But its structured and written like a real generator.

Did this to speed up testing times (30s down to about 8s) but mostly because yeoman-generator testing kept clobbering my generator-angular development (by installing the published version instead of keeping my `npm linked` version alone).
Merge pull request #593 from eddiemonge/faster_test

use a second dummy generator instead of gen-ang