Noting compatibility, and (lack of) future plans

Author: mnielsen

README.md

@@ -1,10 +1,20 @@
 # Code samples for "Neural Networks and Deep Learning"
 
-This repository contains code samples for my (forthcoming) book on
-"Neural Networks and Deep Learning".
+This repository contains code samples for my book on ["Neural Networks
+and Deep Learning"](http://neuralnetworksanddeeplearning.com).
+
+The code is written for Python 2.6 or 2.7. Michal Daniel Dobrzanski
+has a repository for Python 3
+[here](https://github.com/MichalDanielDobrzanski/DeepLearningPython35). I
+will not be updating the current repository for Python 3
+compatibility.
+
+The program `src/network3.py` uses version 0.6 or 0.7 of the Theano
+library.  It needs modification for compatibility with later versions
+of the library.  I will not be making such modifications.
 
 As the code is written to accompany the book, I don't intend to add
-new features.  However, bug reports are welcome, and you should feel
+new features. However, bug reports are welcome, and you should feel
 free to fork and modify the code.
 
 ## License

src/network3.py

@@ -25,6 +25,9 @@
 implementation of dropout (https://github.com/mdenil/dropout ), and
 from Chris Olah (http://colah.github.io ).
 
+Written for Theano 0.6 and 0.7, needs some changes for more recent
+versions of Theano.
+
 """
 
 #### Libraries