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