Refactor user create directory test
Add lib to Guardfile and rails autoload path

Lib folder will be watched by Guard for changes.
Lib folder is also added to Rails autoloaded paths for ease of
including files in there.
Create Piece model

Create initial Piece model, migration and spec.
Update gem versions used
Migrate db to include the Piece model
Add Piece spec
Remove folder creation from creating new user
Allow users to own and create pieces

Add Pieces as a resource.
Add User and Piece association and the migration.
Add Pieces link to the header.
Add Pieces controller and necessary actions/views.
Ensure only logged in users can view pieces.
Create Pieces controller spec.
Create Pieces request spec.