(03-10-2013) Mouse work conitnues

Got the latest code from Dan and have integrated the PS/2 mouse code into it.  Created a wiring diagram so that hopefully anyone can grab a PS/2 mouse and use it for dome positioning on their own R2 without too much expense or trouble.

Originally I thought I could use the teeth of the A&A gear set to trigger the optical sensors, but the gap appears to be too wide.  When using the gear set I only get the X axis to increment, but it won't decrement, but if I use the wheel included with the mouse it works fine.