title: key combination in chrome extension
body: <p>I'm developing an extension for chrome that access a website. I was wondering if I could use a key combination to launch that website.</p>
  
  <p>Manifest:</p>
  
  <pre><code>{
      "name": "name",
      "version": "1.1",
      "manifest_version": 2,
      "description": "description",
          "icons": {
            "16": "icon_16.png",
            "48": "icon_48.png",
            "128": "icon_128.png"
          },
      "browser_action": {
          "default_icon": "icon_48.png"
      },
      "background": {
          "scripts": [
              "background.js"
          ]
      },
      //START UPDATE
      "commands": {
        "toggle-feature-foo": {
          "suggested_key": {
            "default": "Ctrl+Shift+5"
          },
          "description": "Toggle feature foo",
          "global": true
        }
      },
      //END UPDATE
      "permissions": [
          "tabs",
          "contextMenus"
      ]
  }
  </code></pre>