A userscript that enhances browsing through PHP code on GitHub by linking referenced classes!
The script assumes that your php repo has a composer.json and that you also have either PSR-0 or PSR-4 autoloading defined in it.
Additionaly to that it checks your composer.json's "require" and "require-dev" sections and does a lookup on Packagist for them (also assuming those packages have autoloading defined in their composer.json).
Classnames with underscores aren't supported (and i don't really plan to support them. Upgrade your code, m8).