Support for GET modified

#Modification:
support for GET request modified, a function checks config file and
matches if current url need to be checked for GET based CSRF attack
Update README.md
example implementation of config.php

#Modification: added sample for `verifyGetFor`
1. check for every http GET request
2. Check for any request having delete.php after domain/somelevel/ ex `http://server.com/user/delete.php`
isURLallowed() can be overridden now

#Modificatio: static method of the isURLallowed is called, which allows
user to override the function and design it accordingly
Merge pull request #1 from mebjas/GET-support

Get support