Nick Caplinger

Add initial support for scene raycast, sweep, and overlap

4

~Note that this pull request also reorganizes the examples, putting them into their own crate. I used [ash](https://github.com/MaikKlein/ash/tree/master/examples) as my example. This is likely going to break the current Github...

The link to Thorndyke lead me to a website that claimed Firefox was out of date and tried to get me to download some malware. I've removed another two that...