create a new gist with github api. change your user-agent appropriately

gistfile1.txt

var url = 'https://api.github.com/gists'
  var method = "POST";
  var headers = {
    'User-Agent': 'tributary'
  , 'content-type': 'application/json'
  , 'accept': 'application/json'
  };
  if(token) {
    headers['Authorization'] = 'token ' + token;
  }

  request({
    url: url,
    body: data.toString(),
    method: method,
    headers: headers
  }, onResponse)

  function onResponse(error, response, body) {
    if (!error && response.statusCode == 201) {
      callback(null, JSON.parse(body));
    } else {
      callback(error, null);
    }
  }