Bicycle Handle Bar Mount for 1/4

Designed to replace a [store-bought handle bar mount](http://store.ecoxgear.com/collections/accessories/products/handle-bar-mount) that could support a device w/a 1/4"-20 threaded nut.

After buying 2 of them and having both of them break on me, I decided it would be fun to recreate the mount but make a few improvements, which include:

* Reinforcing the areas that were susceptible to breaking because they had very thin walls.
* Increased the size of the thumbscrew that tightens the