Update app.php

First iteration of the App class.  Ported over the code from the original "front controller" and separated it into the logical functions.
Update config.example.php

Updated to cover needed configuration for the App class.
router and gitignore

Updated router to match new multisite architecture.  Removed troublesome
comments from gitignore file.
Merge branch 'master' of github.com:lolmvc/framework