Separated helpers and API Resources into separate files.

To help keep things managable, I have separated the helper methods from the API resource hashes.
Changed the Link URLs to be for Freckle.
Modified URL and timestamps of the account object.
Created our Entry Objects & the various simple objects it depended on

The objects created were:
* Entry
* The Editable fields for our entry object
* Simple Project Object
* Simple Tag Object
* Simple Invoice Object
* Simple Import Object
Wrote the first complete draft of the Entry Object Specification.