Pending tests for registering models
Passing tests for Bookshelf.register
Documentation for using Bookshelf.register and Bookshelf.models

Also adds explanation of why to use these helper methods (#199)
Wrap line length in docs to make HTML more readable in a text editor. Follows the convention in the rest of the lib.
Tests for new model syntax
New model registry syntax
Register collections using the same syntax as models
Reorder arguments
Rewrite tests to eliminate repitition
Update documentation for new syntax, w/ additional examples
Remove register from core
Add register as a plugin and enable string resolution via monkey patched Model methods
Clean up test spies from prototypes after running
Remove plugin docs from main docs (moved to Wiki — https://github.com/tgriesser/bookshelf/wiki/Plugin:-Model-Registry)
Merge
Merge branch 'feature/model-registry' of github.com:valet-io/bookshelf into feature/model-registry