Monthly meetup

This month: Caleb (github.com/calebwin) will present an update on Emu (calebwin.github.io/emu) and procedural macros for GPU acceleration.

Code of Conduct: Please review the Rust community's Code of Conduct (https://www.rust-lang.org/en-US/conduct.html) before coming to the meetup. Let's make this meetup great for everyone!