Changed README to README.md

Author: jwiegley

README renamed to README.md

@@ -1,2 +1,4 @@
 Git scripts written by different people.
-Note: some scripts depend on each other, so it's a good idea to put all of them in your $PATH
+
+Note: some scripts depend on each other, so it's a good idea to put all of
+them in your `$PATH`.