Add getItems function

[oevans]

Add a getItems function (similar to getUsers). One use case is to be able to easily create a spreadsheet of all items with views and other information that can be turned into a PivotTable and used to summarize activity in an organization.

[ecaldwell]

Closed with #15. Use an advanced search to get all items for an org (remove the totalResults parameter and add a token) or a specific user.