Updated README.md to describe new additions

README.md

@@ -8,13 +8,17 @@ The files here are based on the November 11, 2014 public release of
 GENESIS 2.4, available from http://genesis-sim.org/GENESIS. The directory
 'genesis' contains these, with any changes made since that time.
 
-The 'pgenesis' directory will contain development versions of parallel
-GENESIS (PGENESIS) version 2.4, updated from version 2.3.1.
-
-The 'genesis-binaries' directory contains pre-compilied binary
-distributions, such as 'genesis-binaries/genesis-2.4-Cygwin-bin.tar.gz'.
-
+The 'pgenesis' directory contains development versions of parallel
+GENESIS (PGENESIS) version 2.4, updated from version 2.3.1. Not all
+features of GENESIS 2.4 have yet been incorporated into PGENESIS 2.4.
 
+The December 6, 2014 update contains new documentation and compiled binaries for
+using GENESIS under MS Windows with Cygwin.
 
+The December 11, 2016 update contains source code (in genesis/src/newconn) for
+'facdep_rules', a new hsolveable short term facilitation/depression synaptic
+plasticity object. Documentation is in genesis/Doc/facdep_rules.txt.
 
+The 'genesis-binaries' directory contains pre-compilied binary
+distributions, such as 'genesis-binaries/genesis-2.4-Cygwin-bin.tar.gz'.