Add a man page for Schema

[Lathie]

Example (It goes on for much longer) -

to test, do man -l schema.1

[thomasdfischer]

@Lathie this looks great. Before merging, we should move schema.1 into a directory called man/ or man_pages/. I know I said that it's fine to put it in the base directory earlier, but I didn't realize that it's called schema.1. Some people wouldn't be able to recognize that it's a man page just by its filename if it's in the base directory.

[thomasdfischer]

closes #49

[Lathie]

@thomasdfischer created man_pages/