This change revamps the main portion of the RBTools API docs to make it

much easier to get started. These changes include:
Significantly reworked and expanded the "Overview" page. This

includes:

Start with the tiniest example that can just instantiate the client

     and get the root resource.
Authentication options (new).
What resources are (new).
How to access resource data (simplified).
How to iterate over list resources (new).
How to navigate links between resources (simplified).
Request parameters (simplified)
Expanding resources (new)
Limiting data (new)
Error handling (new)


Renamed "Tutorial" to "Common Use Cases", and updated the content with

improved examples and better Python practices.

Removed the old "Resource Specific Functionality" page, since all of

these are now properly documented in the docs for each resource

subclass.

Built HTML and checked the output.