Merge pull request #1 from prakharprasad/master

Some enhancement and fixes
Update validate_token.php
removed multiple encodings

removed dompurify as htmlentities is already used
tidy
Delete purify.js
supress errors incase its unset.
Update README.md
Update README.md
Update get_token.php
added domain check
Update index.html
Update auto-xsrf.js
Merge pull request #1 from dpnishant/master

upstream-sync