Remove useless background info; it's now on the website.
tree64dd54337275283c59d62bbb6d6e9436da31d51c
-rw-r--r-- 58 .gitignore
-rw-r--r-- 4904 README.txt
-rw-r--r-- 6878 csrf-magic.js
-rw-r--r-- 9888 csrf-magic.php
drwxr-xr-x - js-test
-rw-r--r-- 2280 test.php