Add note and link to RTD in old ipynb doc

docs/source/examples/Notebook/Configuring the Notebook and Server.ipynb

@@ -7,6 +7,13 @@
     "# Configuring the Notebook and Server"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "**Note: The most current documentation on these topics may be found at the Jupyter notebook documentation on Read the Docs https://jupyter-notebook.readthedocs.org/en/latest/public_server.html.**"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -247,7 +254,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.4.0"
+   "version": "3.5.0"
   }
  },
  "nbformat": 4,