gistfile1.m

- (void)webViewDidFinishLoad:(UIWebView *)webView {
  
  /**
   * Since there are a lot redirects then UIWebview delegate methods are called ALOT.
   * Therefore I just want to check and make sure that I am only getting the value when the url has my hostname in it
   */
  NSRange rangeRound = [[[webView.request URL] absoluteString] rangeOfString:@"corywiles"];

  if (rangeRound.length) {

  NSString *authToken = [[webView stringByEvaluatingJavaScriptFromString: @"document.getElementById('token').innerHTML"]
                         stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];
    NSLog(@"authToken: %@", authToken);

  } else {
    NSLog(@"no auth token");
  }
}