Moved example files from emokit dir.

Applied commits from emokit-old fork.

OS X support, fixed rendering, added doc strings, cleaned up code.
Fixed spelling.
Added serial_number to init variables.

Removed ctypes from requirements.txt.
Only needed to run an example. Generates errors on OS X.
Merge pull request #119 from CerebralPower/master

OS X support, fixed rendering, added doc strings, cleaned up code.