Hedgehog x screens

@ChrisRand I moved this to software discussion to get more visibility :)

Also, there's a list of tested touchscreens in the manual at section 3.1.6. My favorite touch screen is Dell P2418HT. It's a little pricey, but the screen is really nice and the tilt of the screen can be changed easily.

I'm using the Planar Helium PCT2235. Works great for a sub $200 Monitor