Documentation up for the connection API

[Arran Cudbard-Bell]

If anyone is developing a module that uses a pool of connections, there's now documentation for the connection pool API in 3.0.

http://doc.freeradius.org/connection_8c.html

The doc site is also once again updating automatically after every commit or pull on GitHub.

http://doc.freeradius.org

Thanks again to Phil Mayers for providing the original doxyfile and starting the documentation process off.

-Arran