Add deprecation warning once {{component}} PR lands in a stable release

[jasonmit]

I think it would be wise to add a deprecation/obsolete warning in the documentation once this PR makes its way to a stable release, no longer under a feature flag.

See: emberjs/ember.js#10093

Thoughts?

[rlivsey]

Completely agree.

I plan on giving the new component helper a whirl over the next few days when I've recovered from xmas/NY and then slapping a big note on the top of the README telling people they don't need to use this addon any more.

Very happy that the need for this is going away!

[wbyoung]

+1

Thanks for the work on this. I was able to follow your discussion through Stack Overflow and the Ember discussions and finally land on emberjs/ember.js#10093. Perhaps it wouldn't hurt to add a link to the README right now in case anyone else goes on the same hunt that I just did?

[acorncom]

+1 on the Readme tweak. @rlivsey happy to send in a pull request for that if you like, I followed the same path as @wbyoung ;-)

[rlivsey]

@acorncom pull request for README tweak would be great