Source

Omlet / manifest.json

{
    "name": "Omlet",
    "description": "An omnibox-based bookmarklet dictionary",
    "version": "1.1",
    "omnibox": { "keyword" : "=" },
    "icons": {
        "16": "icon-16.png",
        "48": "icon-48.png",
        "128": "icon-128.png"
    },
    "background": { "scripts": ["background.js"] },
    "permissions": ["tabs", "http://*/*", "https://*/*", "file://*"]
}