Fixed missing host. Fixed timeout.

@kylef Just noticed that when no base host is defined, it creates invalid URLs in Paw (as URLs in Paw need to have their base: protocol + host). So it adds a default host name (not perfect at all). Future versions of Paw will allow to configure Environment Variables or even prompt users for choice, so we can improve it later.

Also, timeouts are in milliseconds, to match standard JavaScript libraries.