Hyperloop for Windows C++/CX

This brings Hyperloop for Windows to an alpha (or near alpha) phase. We'll be ready to throw a lot of different examples at it to see what else we need to fix. The simple and touches apps are both fully functional, and I have loosened the rigidity of the tooling to make it easier for people to get started.

One change to look closely at is to lib/hyperloop.js. The two try-catch blocks that I removed were causing the stack trace to not show up on Windows. When I remove them, we get the full errors. I think they're just there to make the errors prettier; correct me if I'm wrong.

Ran the following "tests":
- Can compile and run examples/windows/simple and touches app.hjs on both my Desktop and Laptop.
- Can compile and run several of the Mac app.hjs on my MacBook Pro.
- Mocha tests passing on both platforms.
- Grunt tests passing on both platforms, with exception of pre-existing "should output help" test failures in Windows.