Update README.md

link to class website
CLASS: finished progfun003 class example assignment
CLASS: fixing ignores
CLASS removing workspace files
CLASS: removing project files
CLASS: adding back some example project files
added some exercise worksheets and the first lesson exercise
CLASS: working on first assignment for progfun003
CLASS: finished coin change assignment
CLASS: starting assignment #2
CLASS: implemented functional sets assignment
CLASS: fixed the forall and hence the exists methods
CLASS: initial load of week 3 assignments and examples
CLASS: exercises for week 4