add leaflet to node dependencies
"bootstrap": "~3.3.7",
"bootstrap-sass": "~3.3.7",
"jquery": "^3.2.1",
+ "leaflet": "^1.0.3",
+ "leaflet-easybutton": "^2.2.0",
"picturefill": "~3.0.2",
"select2": "~4.0.3"
}
