[Improvement] update dependencies (#565)

package.json

@@ -64,8 +64,8 @@
     "codecov": "^3.0.0",
     "cross-env": "^5.1.3",
     "css-loader": "^0.28.9",
-    "dependency-tree": "^5.12.0",
-    "eslint": "^4.15.0",
+    "dependency-tree": "^6.0.0",
+    "eslint": "^4.16.0",
     "eslint-plugin-vue": "^4.2.0",
     "extract-text-webpack-plugin": "3.0.2",
     "fast-vue-md-loader": "^1.0.3",
@@ -89,13 +89,13 @@
     "precss": "2.0.0",
     "progress-bar-webpack-plugin": "^1.10.0",
     "rimraf": "^2.5.4",
-    "shelljs": "^0.8.0",
+    "shelljs": "^0.8.1",
     "sinon": "^2.4.1",
     "sinon-chai": "^2.12.0",
     "style-loader": "^0.19.1",
     "uppercamelcase": "^3.0.0",
     "url-loader": "^0.6.2",
-    "vant-doc": "1.0.1",
+    "vant-doc": "1.0.2",
     "vue": "^2.5.13",
     "vue-loader": "^13.7.0",
     "vue-router": "^3.0.1",
@@ -105,7 +105,7 @@
     "vue-template-es2015-compiler": "^1.6.0",
     "webpack": "^3.10.0",
     "webpack-bundle-analyzer": "^2.9.2",
-    "webpack-dev-server": "2.11.0",
+    "webpack-dev-server": "2.11.1",
     "webpack-merge": "^4.1.1"
   }
 }