Updated Project 2 folder

Project2/readme

@@ -0,0 +1,9 @@
+The starting materials for Project 2 are in the
+Corgi folder, and in the Documents folder
+(page 51 of the file implementation.pdf).
+
+The file corgiCFG.txt has the grammar, and
+important comments, including the fact that
+Corgi now allows  /* ..... */ style comments,
+and a list of the built-in functions.
+