Custom classes for ReactCSSTransitionGroup instead of hard coding the post-fix "-enter"...

[bitplanets]

I would like to have more control on the classes that transition automatically add.

How could be done

React.addons.CSSTransitionGroup({
    enterClass       : 'c0',
    enterActiveClass : 'c1',
    leaveClass       : 'c2',
    leaveActiveClass : 'c3',
},

This will not break the current API because you still can do

 transitionName : 'c0'

Do you accept pull requests?

Here is the file to be changed https://github.com/facebook/react/blob/master/src/addons/transitions/ReactCSSTransitionGroupChild.js

Related to but not the same as #2680

[sophiebits]

This is close enough to #2680 that I'll close this one and track there.