Change width to pulseWidth, update the example, keywords.txt and
gui/list.htm

Add simple pulse waveform

pulse plus example

thanks

minute change to test pull requests

Keyword for AudioSynthNoisePink

Fixes the syntax highlighting in the Arduino IDE. This is my first time using Github's web editor, hopefully the whitespace comes out okay.

http://forum.pjrc.com/threads/24793-Audio-Library?p=53878&viewfull=1#post53878