v0.2.2: Breaking API. Added unique messages, fixes, ...

- Added UNIQUE messages.
- Fixed provider 'register' fn from using the reserved keyword 'defaut' by renaming to _default.
- Fixed fire() when an array is passed as argument. It seems that the used 'this' is a reference to the provide instead of the object in '' (_this).
- Fixed gulp from placing the uglified file on the root.
- Updated dist files.
- Updated example.
- Updated README to link to wiki links instead.
- Modifed certain lines to do things the angular-way.