Use variable for source in tests
Merge branch '6_fail_after_update' of github.com:LoveIsGrief/videojs-soundcloud into 6_fail_after_update
Add libnotify notifications to karma
Add test for changing the source
Generalize method for testing source changes

Also include use-case of player initiliazed without a source
Remove unneeded tag to template file
Amend soundcloud error-handling
There isn't much we can do, just say that there is an error.
But now at least we don't override the vjs.Player::error method and call it instead
Amend Soundcloud::src to comply with videojs docs
We should return the current source if the param is empty
and set it if the param isn't
Update example to allow switching the source
No extra libs for now, to keep it simple.
We could use angularJS or some other fancy lib...