chore(deprecated goangular): Removing deprecated files

GoAngular v1 was deprecated and has now been removed with it's many
associated dependencies and tests.
docs(conn, key, model): Adding stability index

The GoAngular API will steadily improve as it matures. Certain parts
still need to be refined.  We want to make it clear which state each
part of the API is in, so we'll be leveraging NodeJS's stability index.

More can be found on the
[stability index here](http://nodejs.org/api/documentation.html).
chore(grunt-bump): adding version bump task

Closes #58
fix(grunt-bump): Updating defaults, specifying target files
chore(release): bumped to v3.2.0