Updated README.md

Author: fergalbyrne

HTM_CLA/HTM_Cortical_Learning_Algorithms.pdf

@@ -3,14 +3,12 @@ nupic.documents
 
 Source of technical and scientific documents related to NuPIC and the CLA.
 
-<table>
-<tr>
-  <td>
-    <img src="https://github.com/numenta/nupic/wiki/images/icons/warning.png"/>
-  </td>
-  <td>
-    <h3>This repository is not being used.</h3>
-    <p>It is kept here for historical reasons. Pull requests will not be addressed.</p>
-  </td>
-</tr>
-</table>
+This is a fork of the 2011 Numenta White Paper.
+
+Changes:
+
+* Split out LaTeX source into chapter files.
+* Reworked terminology to correct errors relative to NuPIC
+* Adding chapter on new Sensorimotor CLA
+* New naming - replace Spatial Pooler with Pattern Memory, (old) Temporal Pooler with Transition Memory.
+