Update README.md

Author: jvns

README.md

@@ -25,6 +25,9 @@ examples right away.
 Table of Contents
 =================
 
+
+* [A quick tour of the IPython Notebook](http://nbviewer.ipython.org/github/jvns/pandas-cookbook/blob/master/cookbook/A%20quick%20tour%20of%20IPython%20Notebook.ipynb)
+  <br> Shows off IPython's awesome tab completion and magic functions.
 * [Chapter 1: Reading from a CSV](http://nbviewer.ipython.org/github/jvns/pandas-cookbook/blob/master/cookbook/Chapter%201%20-%20Reading%20from%20a%20CSV.ipynb)
   <br> Reading your data into pandas is pretty much the easiest thing. Even when the encoding is wrong!
 * [Chapter 2: Selecting data & finding the most common complaint type](http://nbviewer.ipython.org/github/jvns/pandas-cookbook/blob/master/cookbook/Chapter%202%20-%20Selecting%20data%20&%20finding%20the%20most%20common%20complaint%20type.ipynb)