title: Webpack dev server - reloading/recompiling doesn't work
body: <p>I am trying to get WDS to automatically recompile and reload my page.</p>
  
  <p>My webpack config is as follows:</p>
  
  <pre><code>module.exports = {
    devtool: 'eval',
    entry: './app/js/index.js',
    output: {
      filename: './public/js/index.js'
    },
    module: {
      loaders: [
        {
          test: /\.js$/,
          exclude: /(node_modules)/,
          loader: 'babel-loader'
        },
        {
          test: /\.scss$/,
          exclude: /(node_modules)/,
          use: [
            { loader: 'style-loader' },
            { loader: 'css-loader' },
            { loader: 'sass-loader' }
          ]
        }
      ]
    },
    devServer: {
      publicPath: "./public",
      hot: true
    }
  };
  </code></pre>
  
  <p>Accessing <code>localhost:8080</code> gives me the <code>index.html</code> page, but without any injected code. What can I do?</p>
  
  <p>I am using webpack 2.2.1 webpack dev server 2.3.0.</p>