fix leaflet下mapvlayerspec.js引用的mapvLayer.js地址错误的问题。 review by caoxinke

Author: tangqinGiser

test/leaflet/overlay/MapVLayerSpec.js

@@ -1,4 +1,5 @@
-require('../../../src/classic/overlay/MapVLayer');
+require('../../../src/leaflet/overlay/mapVLayer');
+
 var mapv = require('mapv');
 window.mapv = mapv;