Examine source code of UniType

{
  "manifest_version": 2,
  "name": "UniType",
  "version": "1.1.0",
  "author": "Craig McNeill",
  "description": "Type in cool unicode fonts anywhere.",
  "homepage_url": "https://github.com/cmmcneill/UniType",
  "icons": {
    "48": "icons/unitype_48.png",
    "96": "icons/unitype_96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "scripts/fonts.js",
        "scripts/content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/unitype_off_16.png",
      "32": "icons/unitype_off_32.png"
    },
    "default_title": "UniType is OFF",
    "default_popup": "popup/popup.html",
    "browser_style": true
  }
}