add Interact notebooks to widget index.ipynb

examples/widgets/index.ipynb

@@ -57,7 +57,9 b''
       "- [Variable Inspector](Variable Inspector.ipynb)  \n",
       "- [Export As (nbconvert)](Export As (nbconvert%29.ipynb)  \n",
       "- [Nonblocking Console](Nonblocking Console.ipynb)  \n",
-      "- [File Upload Widget](File Upload Widget.ipynb)  "
+      "- [File Upload Widget](File Upload Widget.ipynb)\n",
+      "- [Interacting with Python code](Interact.ipynb)\n",
+      "- [Interacting with the Lorenz System](Lorenz.ipynb)"
      ]
     }
    ],