Merge pull request #1 from bvssvni/master

First commit
Merge pull request #2 from bvssvni/master

Upgraded to latest Rust-Empty, added build script
Merge pull request #3 from bvssvni/master

Fix combining filled shapes and textures
Load 8bit greyscale Texture from memory
Merge pull request #4 from Coeuvre/master

Load 8bit greyscale Texture from memory
Merge pull request #5 from bvssvni/master

Upgraded to latest Rust-Empty
Merge pull request #6 from bvssvni/master

Upgraded build script
Fixed spelling error in doc comment