removes misnamed project_controller_spec.rb

functionality moved to projects_controller_spec.rb
Update route now functional for projects controller

- adds necessary PATCH route
- adds controller action
- adds basic functionality tests, no edge case coverage
removes p from update controller action
adds edge case coverage for update controller

tests now check for inability to change developer_id, and persistence of unreferenced attributes.
update route now redirects to developer page
Merge pull request #21 from dmill/edit-controller-action

Edit controller action