Added @geoffoliver attributes.

Geoff likes to exploit the URI and inject key/value pairs into it. It's not something I do, but I was intrigued enough to implement it. Basic usage is /path/to/page/id:123/spam:eggs. The variables are removed from the request variable as to not bork module loading and are made available via Browser::get('variable');
Merge github.com:joshtronic/pickles