Worked a bit more on the routing.

You can now define a route in routes.php and it will execute the code inside the closure.
Inspired by Laravel: Changed the way config is loaded

I really liked the way config files work ik Laravel with a key/value array
pair. It makes it really flexible to get an config setting so I tried to
replicate that behavior.
Bumped version number to 0.2.0
Removed some redundant test code.
Merge branch 'release-0.2.0'