Merge pull request #3 from edvinaskrucas/dev

NEW: Updated composer.json and readme file
Change scope in register function for $app

When running unit tests, the register fails since $this is not in object context
Merge pull request #4 from duellsy/patch-1

Change scope in register function for $app
Updated readme.md
Added full paths for classes in phpdoc
Added missing return statements in phpdoc
Added message alias
Added lastMessage instance
Updated tests to match new message structure
Added clear method for notifciation bag
Added tests for testing "clear" methods in NotificationBag
Adde one more test for notification bag
Added "clear" methods for Notification
Updated NotificationBagTest to use clearAll()
Added tests for testing "clear" methods
Added changelog
Added minimum stability:dev to get right illuminate components
Added indexOf and (set/get)AtPosition methods into collection + tests
Updated method setAtPosition
Added helper file, updated collection and tests