Update to 3

[dbashford]

1. Removed the placeholder function as it will no longer be used with Mimosa 3.0+. Removing it does not break pre 3.0 as Mimosa is fine if it doesn't exist.
2. Updated the function signatures for registering commands. Up to Mimosa 3.0 several varieties have been supported, but going forward many will be removed. Again, this doesn't break pre-3.0 as the signatures being used going forward have been in place for awhile.
3. Updated mimosa-config to not output source maps for compiled coffeescript. As it stood, source maps were being deployed to NPM.
4. Unlike with mimosa-bless, with this repo the compiled JavaScript isn't .gitignored. So there are a few updates for a newer coffeescript compiler and also the removal of source maps.

[coveralls]

Coverage increased (+0.07%) to 65.07% when pulling 44d6a8d on dbashford:update-to-3 into a9a0118 on DarthFubuMVC:master.