Corrected Ubuntu dep based on the readme

The readme states it is intended for Ubuntu 12.10.  Since it
has not been tested on other platforms, corrected the metadata
supports line.

Bumped the minor version since this is not a bug fix, and changes
the "API" as to who is supported to consume the cookbook.
Merge pull request #6 from retr0h/retr0h/correct-ubuntu-supports

Retr0h/correct ubuntu supports