Schema cleanup

[hunterowens]

This PR renames generate_schema to schema, and removes the Pipfile, because we have a requirements.txt

[thekaveman]

I like the cleanup idea; part of the reason for the verbose directory naming was so that this directory was not confused as containing the actual schemas, which are in the provider directory.

However with work on #203 and discussions in #95 and #157, I think it makes sense to have a dedicated schema directory, perhaps with code and schema files alike?

Maybe create an additional subdirectory schema/generate, with existing code renamed to provider.py, and the existing .json moved in (as they are really schema partials/templates). Then we can generate the actual schemas into the root of the schema directory or sub-directories as outlined in #95.

Alternatively, leave the python alone and create a schema/templates or similar subdirectory for the existing .json? So they are not confused as the actual schemas.

[hunterowens]

closing in favor of #328