Update wii_remote_1.py

Fixes issue of making motors move by disabling GPIO.
Re-wrote motor controller part of the code. Previously each button turned on its own motor.

Re-wrote to be each arrow moves the robot in direction. Uses else ifs to help prevent blocking of the pins but not always accurate.
Not needing to be fixed as it just allows it to do one wheeled turning.
Added new photo of board.
Merge pull request #7 from ryanteck/master

Update wii_remote_1.py, Fixes issue #6