De-lint the JavaScript examples

Hi, it's Jeff from DeNA West Dev Support (jeff.williams@dena.com). I need to submit a couple of fixes to the JavaScript OAuth examples. Before I do that, I figured I might as well de-lint everything and clean up some whitespace issues.

The updated files should pass all of JSHint's default settings, and they consistently use tabs for indentation.

Please let me know if you have any questions.