Added scaffold for lists.
Added some feature tests and validation for lists.
Add length validation to list title.
Add validations for description.
Refactored list creation in spec.
Test editing lists.
Add specs for deleting lists
Add todo item model and associated specs.
Add items controller.
Wrote tests for list items
Added test for creating items and associated code.
Add specs and code for editing list items
Added lists to navigation
Delete list items
Merge pull request #7 from bdsimmons/list

Lists & Items - nice work on the tests!