fjw/node-leddriver — pull request #2 by jnovack (2013-09-18 11:29:17+00:00)
Title: Allow Inversion

My schematic required me to invert the color when turning on the LEDs.

Reference Diagram: http://i.imgur.com/kxdTt4K.png

```
driver.setRGB('#FFFFFF'); // Sends 255, 255, 255
driver.invert();
driver.setRGB('#FFFFFF'); // Sends 0, 0, 0
```