Update free-programming-books.md (#2155)

* Update free-programming-books.md

* Update free-programming-books.md

* Update free-programming-books.md

* Update free-programming-books.md

* Update free-programming-books.md

free-programming-books.md

@@ -149,6 +149,7 @@
   * [Kivy](#kivy)
   * [Pandas](#pandas)
   * [Pyramid](#pyramid)
+  * [Tornado](#tornado)  
 * [QML](#qml)
 * [R](#r)
 * [Racket](#racket)
@@ -382,6 +383,7 @@
 * [Gaussian Processes for Machine Learning](http://www.gaussianprocess.org/gpml/)
 * [Information Theory, Inference, and Learning Algorithms](http://www.inference.phy.cam.ac.uk/itila/)
 * [Introduction to Machine Learning](http://arxiv.org/abs/0904.3664v1) - Amnon Shashua
+* [Learn Tensorflow](https://bitbucket.org/hrojas/learn-tensorflow) - Jupyter Notebooks
 * [Learning Deep Architectures for AI](http://www.iro.umontreal.ca/~bengioy/papers/ftml_book.pdf) (PDF)
 * [Machine Learning](http://www.intechopen.com/books/machine_learning)
 * [Machine Learning, Neural and Statistical Classification](http://www1.maths.leeds.ac.uk/~charles/statlog/)
@@ -1861,7 +1863,7 @@ For resources on Angular, Backbone, D3, Dojo, Ember, Express, jQuery, Knockout,
 
 #### Pandas
 
-* [Learn Pandas](https://bitbucket.org/hrojas/learn-pandas) - Hernan Rojas (0.13.0)
+* [Learn Pandas](https://bitbucket.org/hrojas/learn-pandas) - Hernan Rojas (0.18.1)
 
 
 #### Pyramid
@@ -1869,6 +1871,11 @@ For resources on Angular, Backbone, D3, Dojo, Ember, Express, jQuery, Knockout,
 * [Pyramid for humans](http://docs.pylonsproject.org/projects/pyramid-tutorials/en/latest/humans/index.html)
 
 
+#### Tornado
+
+* [Learn Web Programming](https://bitbucket.org/hrojas/learn-web-programming)
+
+
 ### QML
 
 * [Qt5 Cadaques](http://qmlbook.github.io) - Juergen Bocklage-Ryannel and Johan Thelin (HTML, PDF, ePub) (work in progress)