docs: function distAddon(opts, cb) {
    // sign our add-on
    const generatedXpi = 'addon.xpi';
    signAddon(generatedXpi, opts.apiKey, opts.apiSecret, function(err, signedXpiPath) {
      if (err) return cb(err);
      // remove our generated xpi since we now have a signed version
      removeGeneratedXpi();
      // move our signed xpi and rdf into the /dist dir
      // directory and exit
      checkExistsAndMv(signedXpiPath, 'signed-addon.xpi', function(err) {
        if (err) return cb(err);
        console.log('addon.xpi written to signed-addon.xpi');
        cb();
      });
    });
  }