Sphinx autodoc doesn't work because libmpv seems to not exist in 14.04

[sumnerevans]

The Travis build is configured to automatically document all of the visplay source code. However, doing so requires libmpv. Installing libmpv on the Travis build environment is proving to be difficult. We need to fix this somehow.

[sumnerevans]

I've been looking into doing the build using Docker. I have not had much success. I've also looked into manually downloading all of the necessary library file dependencies from the Arch repos, but there's approximately 4,000,000,00 dependencies /s.