Update PWM references
Merge pull request #22 from Resseguie/pwm-misc

Update PWM references following new pin additions
Administrative nits

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
readme docs cleanups and updates

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
Adds pinMode to shape tests

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>