More ways to determine version of Drupal

[budda]

If you check out the javascript code in the "Version Check" Chrome extension there's some magic done using javascript file diffs to determine what version of Drupal is installed when CHANGELOG and meta tags are absent.

Might be a nice addition to add.

https://chrome.google.com/webstore/detail/version-check/eihipkpiiekmobooapflpdhpkpjohahe?hl=en