Jay from Kite here. We're on our way to supporting more languages and operating systems. Stay tuned! Pro tip: when you sign up on our website, you can also specify which language you use so we can keep you in the loop when we get to it!
It can't be used right now anyways, so if it currently doesn't support your favorite language, what does it matter? Who knows what it will support once we get an alpha/beta/release version?
Do you also tell the people that show you a prototype of their product that they are misleading you, because they claim to build an extended product out of that prototype?