Trinket Volume Knob

This is a remix of [Large computer volume control knob by 8bitlogic](http://www.thingiverse.com/thing:440996). I wanted to make a volume knob for my computer using an [Adafruit Trinket](https://learn.adafruit.com/trinket-usb-volume-knob/overview) and a rotary encoder, I didn't have an encoder laying around that would fit into the original knob design so I modified the knob to allow for a round encoder shaft.