Link Cree LED bulbs

I pieced it all together from searching and finding this thread: Better Dimmer Device - #6 by twack

Basically, log into the API, create the new device type for the virtual dimmer, paste the code for the Better Virtual Dimmer. Save, publish.
Create a new device, use the new virtual dimmer device type (should be at the bottom of the type dropdown).
Create the smartapp in the API, paste the code of the Dim With Me smartapp. Save, publish.
Install the smartapp from the SmartThings app (Marketplace > SmartApps > My Apps).
Pick the virtual dimmer as the master dimmer, and the bulbs as slave dimmer switches.

References: