Initial tests.
Ensure selected() returns and not echoes, as it an argument in a sprintf() call.

Also, add a space before the count to make it look better.
Add Gamajo_Registerable interface and classes
Switch to Gamajo_Registerable.

Includes some more tests, though they are not comprehensive.
Remove dead code.
Ensure $blog_ids are truth (non-empty array and not false).
Merge pull request #52 from GaryJones/feature/build-term-options

Build term options fixes
Merge pull request #53 from GaryJones/feature/tests

Introduce tests