[Doc] update vant-demo respo (#318)

* fix: Tabbar icon line-height

* [new feature] progress add showPivot prop

* [new feature] TabItem support vue-router

* [new feature] update document header style

* [Doc] add toast english ducoment

* [bugfix] Search box-sizing wrong

* [Doc] update vant-demo respo

package.json

@@ -106,7 +106,7 @@
     "style-loader": "^0.19.0",
     "uppercamelcase": "^3.0.0",
     "url-loader": "^0.6.2",
-    "vant-doc": "0.3.16",
+    "vant-doc": "0.3.17",
     "vue": "^2.5.3",
     "vue-loader": "^13.5.0",
     "vue-markdown-loader": "^2.2.3",