''This initial Early Access version of the game REQUIRES a wired Xbox 360 controller or wireless Xbox 360 controller with PC adapter (or compatible 3rd party controller).''
taken directly from steam page
And I'm playing it with a M&K combination pretty darn well :P
There's currently no official support for M&K, but it can still be played.
As in using a program to convert or? You gotta add more info when you say stuff, just sayin