Removing deprecated .to_owned by .to_string method.

    > sed -i "s/.to_owned/.to_string/g"
Removing minor warning from the build.
Removing TEST.sh
Merge pull request #3 from darnuria/suppressing_minor_warning_in_s/v/g/opengl.rs

Suppressing minor warning in opengl.rs
Merge pull request #2 from darnuria/removing_deprecated_code

Changing deprecated `.to_owned` for `.to_string` method.
Merge branch 'master' of https://github.com/nical/vodk.rs