Merge pull request #1 from mro/master

minor, example url DRY.
Update to latest Redland-ObjC submodule

This commit also includes an inactive code block (`CHViewController.m`, lines 84=98) that shows how one would use SQLite as local storage, but the storage init fails and the assert fails. Not sure what's wrong there.
Merge pull request #1 from p2/master

update