fix dependency issue
fix dependency issue

haoliangyu/angular2-leaflet-starter,dkocich/osm-pt-ngx-leaflet,haoliangyu/angular2-leaflet-starter,troddick/SiGL_Mapper,dkocich/osm-pt-ngx-leaflet,troddick/SiGL_Mapper,troddick/SiGL_Mapper,dkocich/osm-pt-ngx-leaflet,haoliangyu/angular2-leaflet-starter