updated README

README.md

 Magic Toadstool
 ===========
 
-This is the home of Caterpillar or Cat for short. 
+This is the home of Caterpillar or Cat for short.
 
 Clone the repository and RUNME to get started.
 
-If you've come here straight from the Mock Turtle then head over to http://igor.gold.ac.uk/~skata001/underland/pt3/classc.html and watch the videos first
+If you've come here straight from the Mock Turtle then head over to http://doc.gold.ac.uk/www/277/classc and watch the videos first
 
-Enjoy, but not too much ! 
+Enjoy, but not too much !