Repository merge - renaming

I read the issue about renaming some things. Well, I dont know wether u agree or not.

However it felt to me as if the repositories should best be merged into one for easier editing and adding of new content, like the generator that was proposed(if u so want to).

The hierarchy json/pointer, json/reference and json/schema is maybe easier to remember. However I suppose that's quite subjective.

What is necessary to do in case u merge is the schema repository should be renamed from gojsonschema to json.

The downside is that I do not know how to include the histories of the reference and the pointer repos into the schema. I deleted them from the fork, it only includes the schema definition right now.

Another problem would have the developers, like you probably. Cause the import paths and the use of gojsonschema.Xyz would have to be renamed to schema.Xyz.

As I think of it right now, it might be an alternative to use subrepositories, however that may work I do not know how.

Whatever u decide, thank you for your work, for writing this library!