code: function getBinaryUrl() {
    var site = flags['--sass-binary-site'] ||
               process.env.SASS_BINARY_SITE  ||
               pkg.nodeSassConfig.binarySite;
  	return [site, 'v' + pkg.version, sass.binaryName].join('/');
  }
docs: Determine the URL to fetch binary file from.
  By default feth from the node-sass distribution
  site on GitHub.
  
  The default URL can be overriden using
  the environment variable SASS_BINARY_SITE
  or a command line option --sass-binary-site:
  
  node scripts/install.js --sass-binary-site http://example.com/
  
  The URL should to the mirror of the repository
  laid out as follows:
  
  SASS_BINARY_SITE/
  
  v3.0.0
  v3.0.0/freebsd-x64-14_binding.node
  ....
  v3.0.0
  v3.0.0/freebsd-ia32-11_binding.node
  v3.0.0/freebsd-x64-42_binding.node
  ... etc. for all supported versions and platforms
  
  @api private