Publish tilequeue to pypi

[nvkelso]

Sister issue to tilezen/tileserver#51.

[nvkelso]

(Not clear if we should do this with our Docker work that's wrapping up.)

[pnorman]

I think it should be done, not all deployments will necessarily be using docker, and the hard work of packaging it is already being done, it's just uploading it to pypi.

[nvkelso]

This is done: https://pypi.python.org/pypi/tilequeue/1.9.1.