Fixed: make clean was not removing *.rlib.
Merge pull request #12 from hannobraun/master

Fixed: make clean was not removing *.rlib.
Disable warnings about non-camel case types.

I don't think there's much reason to follow Rust's style guidelines in
FFI code.
Merge pull request #13 from hannobraun/camel-case-warnings

Disable warnings about non-camel case types.
Rust upgrade