Merge pull request #75 from bvssvni/master

Added metadata to Cargo.toml
Merge pull request #76 from bvssvni/master

Added metadata to freetype-sys Cargo.toml
Merge pull request #78 from bvssvni/master

Moved stuff out to freetype-sys
Upgraded to latest Rust

* Changed “tags” to “keywords” in Cargo.toml