Fixed links to featured recipes.

Author: rossant

README.md

@@ -8,12 +8,15 @@ This repository contains the recipes of the [IPython Cookbook](http://ipython-bo
 
 ## Featured recipes
 
-* [Featured Recipe #1: Getting the Best Performance out of NumPy](http://ipython-books.github.io/featured-01.html)
-* [Featured Recipe #2: Simulating a Physical System by Minimizing an Energy](http://ipython-books.github.io/featured-02.html)
-* [Featured Recipe #3: Creating a route planner for road network](http://ipython-books.github.io/featured-03.html)
-* [Featured Recipe #4: Introduction to Machine Learning in Python with scikit-learn](http://ipython-books.github.io/featured-04.html)
-* [Featured Recipe #5: Simulating a Partial Differential Equation: reaction-diffusion systems and Turing patterns](http://ipython-books.github.io/featured-05.html)
-* [Featured Recipe #6: Getting started with Vispy](http://ipython-books.github.io/featured-06.html)
+A selection of free recipes from the book:
+
+1. [Getting the best performance out of NumPy](http://nbviewer.ipython.org/github/ipython-books/cookbook-code/blob/master/featured/01_numpy_performance.ipynb)
+2. [Simulating a physical system by minimizing an energy](http://nbviewer.ipython.org/github/ipython-books/cookbook-code/blob/master/featured/02_energy_minimization.ipynb)
+3. [Creating a route planner for road network](http://nbviewer.ipython.org/github/ipython-books/cookbook-code/blob/master/featured/03_gps.ipynb)
+4. [Introduction to machine learning in Python with scikit-learn](http://nbviewer.ipython.org/github/ipython-books/cookbook-code/blob/master/featured/04_scikit.ipynb)
+5. [Simulating a partial differential equation: reaction-diffusion systems and Turing patterns](http://nbviewer.ipython.org/github/ipython-books/cookbook-code/blob/master/featured/05_turing.ipynb)
+6. [Getting started with Vispy](http://nbviewer.ipython.org/github/ipython-books/cookbook-code/blob/master/featured/06_vispy.ipynb)
+* more coming soon...
 
 
 ## Table of contents