Library Updates

Issue #1 - no longer allow out-of-range hertz() calls to effectively hang the program
Issue #2 - optimize fading calculation method to save execution cycles and library program space

Added new example program

Added Tri-color-LED.ino

Initial public release

This library is designed for LEDs attached to an Arduino. Any number of pins can be controlled using the library and the PWM is done in 10-bits (1023 brightness levels). It also supports fading/brightening in the background while the sketch continues running.