title: `Manifest file is invalid` when installing my chrome extension?
body: <p>This is my manifest.json  </p>
  
  <pre>{
  
    "name": "Environment Quick Switch",
  
    "version": "1.0",
  
    "description": "Quick switch around develop environments.",
  
    "browser_action": {
  
      "default_icon": "icon.png",
      "popup": "action.html"
  
    },
  
    "permissions": [
  
      "tabs", "http://*/*", "https://*/*"
  
    ]
  
  }</pre>  
  
  <p>I load it's folder in develop mode is OK, but after I packaged it and try to install the .crx file, comes the <code>Manifest file is invalid</code> problem .  </p>
  
  <p>Is anyone knows how to deal with this?</p>