Ensure that the uri has a leading slash when dispatching
Ensure that the uri has a leading slash when dispatching

The path from Uri will not have a leading slash if there is a basePath, so we need
to ensure that there is one before we dispatch, otherwise we'll never find any of our
defined routes.

AndrewCarterUK/Slim,foxyantho/Slim,designermonkey/Slim,Sam-Burns/Slim,mnapoli/Slim,dopesong/Slim,samsonasik/Slim,akrabat/Slim,JoeBengalen/Slim,jaapverloop/Slim,juliangut/Slim,iinux/Slim,iinux/Slim,RealSelf/Slim,slimphp/Slim,feryardiant/slim,iinux/Slim