[Improment] add $toast/$dialog to Vue.prototype (#363)

package.json

@@ -108,12 +108,12 @@
     "uppercamelcase": "^3.0.0",
     "url-loader": "^0.6.2",
     "vant-doc": "0.3.18",
-    "vue": "^2.5.8",
+    "vue": "^2.5.9",
     "vue-loader": "^13.5.0",
     "vue-router": "^3.0.1",
-    "vue-sfc-compiler": "^0.0.5",
+    "vue-sfc-compiler": "^0.0.6",
     "vue-style-loader": "^3.0.0",
-    "vue-template-compiler": "^2.5.8",
+    "vue-template-compiler": "^2.5.9",
     "vue-template-es2015-compiler": "^1.6.0",
     "webpack": "^3.8.1",
     "webpack-bundle-analyzer": "^2.9.1",