postal.js/build-browser-amd.json

{
    "source": "src/main",
    "output": "lib/browser/amd",
    "lint": {},
    "uglify": {},
    "gzip": {},
    "extensions": { "uglify": "min", "gzip": "gz" },
    "wrap": {
        "prefix": "define(['underscore'], function(_) {",
        "suffix": "return postal; });"
    }
}