update readme to specify kapre version

README.md

@@ -12,9 +12,9 @@ Repo for paper "Transfer learning for music classification and regression tasks"
   - [Jamendo singing voice](http://www.mathieuramona.com/wp/data/jamendo/)
   - [Urbansound8K](https://serv.cusp.nyu.edu/projects/urbansounddataset/urbansound8k.html)
 
-* Software
-  - [Keras 1.2.2](https://github.com/fchollet/keras/tree/1.2.2/keras)
-  - [Kapre 0.0.3](https://github.com/keunwoochoi/kapre), or get the right version with pip
+* Prerequisite
+  - [Keras 1.2.2](https://github.com/fchollet/keras/tree/1.2.2/keras) *NOT THE MOST RECENT VERSION*
+  - [Kapre 0.0.3](https://github.com/keunwoochoi/kapre/tree/a3bde3e38f62fc5458231198ea2528b752fbb373) or clone the repo and `$ git checkout a3bde3e` *NOT THE MOST RECENT VERSION*
   - Sckikt learn, pandas.
 
 ## Usage