依赖更新 && 构建调整 (#60)

* upgrade dependencies

* 更改所有 saladcss 写法

* fix: 升级依赖导致的样式错误

* fix: build vant css

* use es module when pack && webpack scope hoisting

* fix: vue module version

* delete unused npm script

* fix: build:vant script not work

* fix: webpack config format

* fix: build minify vant.js

* fix: captain ui relative link

build/webpack.components.js

@@ -1,6 +1,7 @@
-var path = require('path');
-var Components = require('../components.json');
-var config = require('./webpack.build.js');
+const path = require('path');
+const Components = require('../components.json');
+const config = require('./webpack.build.js');
+const webpack = require('webpack');
 
 delete config.devtool;