Cask for Querious - a MySQL GUI

Signed-off-by: James Pearson <james@fearmediocrity.co.uk>
Updated to pull the latest version, as the URL is not version specific.

Signed-off-by: James Pearson <james@fearmediocrity.co.uk>
Merge pull request #777 from FearMediocrity/querious

Add Querious Cask