CODE EXAMPLE FOR SHELL

composer install repo from tar

"repositories": [
  "type": "package",
    "package": {
        "name": "nodejs/nodejs",
        "version": "0.12.6",
        "dist": {
        "type": "gzip",
        "url": "https://nodejs.org/dist/v0.12.6/node-v0.12.6-linux-x64.tar.gz"
      }
    }
  }
],
"require": {
  "nodejs/nodejs": "0.12.*"
}