优化

package.json

@@ -11,10 +11,12 @@
     "build": "node build/build.js"
   },
   "dependencies": {
+    "add": "^2.0.6",
     "axios": "^0.18.0",
     "babel-plugin-component": "^1.1.1",
     "babel-polyfill": "^6.26.0",
     "babel-preset-es2015": "^6.24.1",
+    "default-passive-events": "^2.0.0",
     "echarts": "^5.1.1",
     "element-ui": "^2.15.14",
     "stylus": "^0.54.5",
@@ -23,7 +25,8 @@
     "vue-particles": "^1.0.9",
     "vue-router": "^3.0.1",
     "vue-seamless-scroll": "^1.1.16",
-    "vuex": "^3.0.1"
+    "vuex": "^3.0.1",
+    "yarn": "^1.22.21"
   },
   "devDependencies": {
     "autoprefixer": "^7.1.2",