add nice transition effect to marker rotate example page
add nice transition effect to marker rotate example page

thx @thomasbrueggemann on #210

shramov/leaflet-plugins,realtymaps/leaflet-plugins,falcacibar/leaflet-plugins,realtymaps/leaflet-plugins,jblarsen/leaflet-plugins,jblarsen/leaflet-plugins,shramov/leaflet-plugins,falcacibar/leaflet-plugins,falcacibar/leaflet-plugins