(Re)fixes bug where URLs are naively double escaped. See https://github.com/andymatuschak/Sparkle/commit/00b67269d69f311ce4dcc39437f1d8ac1825b383 for original fix.
Merge pull request #9 from armadsen/master

(Re)fixes bug where URLs are naively double escaped.
Merge branch 'master' of github.com:pornel/Sparkle
fix critical update and customise automatic updater