improved the design of the zoom buttons
improved the design of the zoom buttons

aufflick/MacMapKit,ThanosSiopoudis/MacMapKit,ronhippler/MacMapKit,Oomph/MacMapKit,tevendale/YFTMapKit,tevendale/YFTMapKit,aufflick/MacMapKit,MIDApp/MacMapKit,ronhippler/MacMapKit,MartinLobger-GN-com/MacMapKit,MIDApp/MacMapKit,ronhippler/MacMapKit,ronhippler/MacMapKit