Use native promises

[nickserv]

While any-promise is a nice solution, I think we could simplify maintaining Promises for dependencies further by using native promises. Node has supported Promise since 0.12, and IE is the only modern browser that is missing Promise support(which can be polyfilled with babel-promise or replaced with webpack externals). While this is a little more work for IE support I like that it makes the Promise implementation selection more predictable.