Merge pull request #100 from bvssvni/master

Upgrade to latest Rust
Use new profile enum instead of raw SDL value
Merge pull request #101 from overdrivenpotato/patch-1

Use new profile enum instead of raw SDL value
Merge pull request #102 from bvssvni/master

Point sdl2 to cargo registry
Merge pull request #103 from bvssvni/master

Point sdl2 back at git
Added metadata to Cargo.toml, renamed package