Merge pull request #4 from Coeuvre/master

Load 8bit greyscale Texture from memory
Upgraded to latest Rust-Empty
Merge pull request #5 from bvssvni/master

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

Upgraded build script
Fixed spelling error in doc comment
Merge pull request #7 from bvssvni/master

Fixed spelling error in doc comment
Create .travis.yml
Merge pull request #9 from leonkunert/master

Create .travis.yml
Correct capitalization of repo name

https://github.com/rust-lang/cargo/issues/85
Update Cargo.toml

Changed dependency to Pistondevelopers rust-graphics
Added Travis status image

Closes https://github.com/PistonDevelopers/opengl_graphics/issues/10
Merge pull request #11 from leonkunert/master

Update Cargo.toml
Upgraded shaders to OpenGL 3.3
Fixed problems with shaders
Merge pull request #14 from bvssvni/master

Upgraded shaders to OpenGL 3.3
Added `attribute_location`
Merge pull request #15 from bvssvni/master

Added `attribute_location`
Fixed rustc version in Travis
Merge pull request #16 from bvssvni/master

Fixed rustc version in Travis