Accept connection parameters as URL strings instead of maps.

[technomancy]

The clojure.java.jdbc library now accepts connection parameters as strings rather than requiring URLs. It would be great if lobos could do the same.

[technomancy]

I can work on a patch for this.

[budu]

I'll postpone that feature to 1.1 finally, I'll wait to see how java.jdbc change (Sean told me he'll get rid of the internal namespace) so that I can reuse as much code as possible from it.