dev add favicon.ico

build/webpack.dev.conf.js

 var utils = require('./utils')
+var path = require('path')
 var webpack = require('webpack')
 var config = require('../config')
 var merge = require('webpack-merge')
@@ -6,6 +7,10 @@ var baseWebpackConfig = require('./webpack.base.conf')
 var HtmlWebpackPlugin = require('html-webpack-plugin')
 var FriendlyErrorsPlugin = require('friendly-errors-webpack-plugin')
 
+function resolveApp(relativePath) {
+  return path.resolve(relativePath);
+}
+
 // add hot-reload related code to entry chunks
 Object.keys(baseWebpackConfig.entry).forEach(function (name) {
   baseWebpackConfig.entry[name] = ['./build/dev-client'].concat(baseWebpackConfig.entry[name])
@@ -28,6 +33,7 @@ module.exports = merge(baseWebpackConfig, {
     new HtmlWebpackPlugin({
       filename: 'index.html',
       template: 'index.html',
+      favicon: resolveApp('favicon.ico'),
       inject: true
     }),
     new FriendlyErrorsPlugin()