Add contributor/development instructions?

[RobertLowe]

It was a pretty wild ride to get my local copy properly linked with my local dev app.

I had to yarn link:

• graphql-compose
• graphql-compose-mongoose
• graphql-compose-pagination
• graphql-compose-connection
• graphql (from graph-compose)
• mongoose

Not sure if this is typical workflow.

Could we maybe provide add instructions (here or to graphql-compose, or the graphql-compose-examples) for getting up and running with an app using local copies.

That said, it was super easy to run tests 👍

Working on some new features. I have recursive operators in the works, some tests written, few more to write, implementation works with my local app.

Sneak peek: