Labrador::App.initialize: Default @path to @name

Without this change I get null `path`s all over the place on the backend and frontend. It appears that `path` is simply [never supplied](https://github.com/jdanbrown/labrador/blob/ebf5996c7d5c48f0c6cda7ac6561bf32442aab14/lib/labrador/app.rb#L39).

Am I missing something?