title: How to change app icon using electron-builder
body: <p>I changed my app icon and for some reason I can not update the icon (currently has the icon of an electron).</p>
  
  <p>Relevant modules I use:</p>
  
  <pre><code> "electron-builder": "5.7.0",
   "electron-prebuilt": "^ 1.4.13"
  </code></pre>
  
  <p>my <code>package.json</code>:</p>
  
  <pre><code>    "build": {
          "appId": "com.siemens.dmv",
          "asar": true,
          "win": {
            "target": "squirrel",
            "icon": "./build/icon.ico",
            "title": "DigitalManufacturingViewer",
            "msi": true,
            "IconUrl": "data: image / png; base64, 
            AAABAyUAJSshACMLBAAeJRAAAw0VAAYPEQAFJzsAE // (long string)
  }
  </code></pre>
  
  <p>I tried several orders without success, does anyone know what command I have to run?</p>