Enable nested rules
Merge pull request #50 from camael24/f/router_resource

Add nested routes.
Minor fix for indexes
Merge pull request #54 from guiled/fix_indexes

Minor fix for router indexes.
Fix a bug in escaping variables in Router::_unroute
Merge pull request #55 from guiled/unroute_escape

Fix a bug in escaping variables in Router::_unroute.
Introduce sessions thanks to @maitrepylos !!
Merge pull request #60 from osaris/add-sessions

Introduce sessions thanks to @maitrepylos