Secondary Resources

Added secondary resources & caching.

Projects API

Projects API (https://www.prosperworks.com/developer_api/projects)

Tasks API

Add Tasks API https://www.prosperworks.com/developer_api/tasks and some util tests.

Users API

Implements the Users API (https://www.prosperworks.com/developer_api/users) as well as aliases .list on searchable models to an empty search.

Opportunities & People APIs

Implemented the Opportunities (https://www.prosperworks.com/developer_api/opportunities) and People (https://www.prosperworks.com/developer_api/people) APIs.

Leads API

Implements the Leads API. More details here: https://www.prosperworks.com/developer_api/leads

Companies API

The Companies API endpoint is implemented. This includes searching, retrieving, updating, creating and deleting. For more information on the actual ProsperWorks Companies API, check here: https://www.prosperworks.com/developer_api/companies.