QueenDer Webcam mount

Hi,

this is just a simple remix of the brace from the thing [MS LiveCam HD-3000 mount](https://www.thingiverse.com/thing:1707995) by [Siad](https://www.thingiverse.com/Siad). I use this new brace for the [QueenDer Webcam](http://www.amazon.de/gp/product/B0895DYCMY/) in combination with octoprint. In additon the brace is mounted to the thing [HD-3000 Corner mount](https://www.thingiverse.com/thing:3443229) by [BMoon](https://www.thingiverse.com/BMoon).