Issue1 make endpoint names RESTful

Fixes #1 

- adjusted endpoint paths to use plural nouns rather than verbs `/api/v1/imports`
- use http GET and POST methods to direct end points to load different classes rather than defining endpoints.
- add `source` and `type` to schema to abstract away from user specific collections.
- add supporting comments to explain endpoint use of parameters
I'm fairly sure that `return console.log('string')` will always return undefined. Can either `return` or `console.log()` here, depending on your use-case.