Just got an email back from Ludei asking if they'll ever have CocoonJS able to work with Spriter and C2, the reply I got is below. This is a setback for me, and likely for others, and I wanted to share it with you.
Not at this moment, we support skeltal animations trought CAAT as you can see here:
But this is based on Esoteric software (http://esotericsoftware.com/) and not on Brashmonkey's Spriter.
Sorry for any inconvenience,