Added logo to readme file.
Added logo to readme file.

GerHobbelt/jquery.dirtyforms,NightOwl888/jquery.dirtyforms,NightOwl888/jquery.dirtyforms,GerHobbelt/jquery.dirtyforms,ziykon/jquery.dirtyforms,snikch/jquery.dirtyforms,NightOwl888/jquery.dirtyforms,GerHobbelt/jquery.dirtyforms,ziykon/jquery.dirtyforms,snikch/jquery.dirtyforms,ziykon/jquery.dirtyforms,snikch/jquery.dirtyforms