link added to index

Author: KimberleyCook

index.html

@@ -70,6 +70,7 @@ <h2>Python</h2>
 
           <ul>
             <li><a href="python/lesson1/tutorial.html">Lesson 1 - Introduction to Python</a></li>
+            <li><a href="python/lesson2/tutorial.html">Lesson 2 - Playing with variables</a></li>
           </ul>
           </section>
           <footer>