Enclosure - Arduino with Shield and wires/buttons/leds

Based on http://www.thingiverse.com/thing:8157. I had a shield (Adafruit Motorshield V2.3) that added a bunch of wiring, so I needed some more space.

Changes:
-Added some extra space on each side for wires
-Made the walls thicker
-Added holes for 4 buttons with and 4 LEDs
-Moved the power LED to the top center
-Left room for several wires to go out the side to the motors