Component sendAction code sample

I think that the API evolved and the code sample wasn't adapted, right?
[BUGFIX release] Allow canceling of Timers in IE8.

For reference:

https://github.com/ebryn/backburner.js/pull/68
https://github.com/ebryn/backburner.js/pull/69
https://github.com/emberjs/ember.js/issues/4222

Fixes #4222.
Merge pull request #4214 from MajorBreakfast/patch-1

Component sendAction code sample