Update readme for jfoundations

Author: yanarchy

README.md

@@ -11,9 +11,9 @@ You will need:
 
 ## The Lessons for Today
 
-* [Welcome Slides](https://docs.google.com/presentation/d/e/2PACX-1vRs7Zh_xmRbUxwJszgHqnbxON3tLlWn0lR1EDj_oz4dwijtzFK9h8x5Ub9TB2r7WjyOz_AeXeqnX1fh/pub?start=false&loop=false&delayms=3000)
 * [Foundations of Programming](https://github.com/codechrysalis/intro-javascript/blob/master/foundations.md)
-* [Intro to Functions](https://github.com/codechrysalis/intro-javascript/blob/master/intro-functions.md)
+* [Dev Environments](https://github.com/codechrysalis/intro-javascript/blob/master/dev-environments.md)
+* [Intro to Variables](https://github.com/codechrysalis/intro-javascript/blob/master/intro-variables.md)
 
 ## What to Do Next?