Modified readme, a bit.
@@ -48,11 +48,14 @@ variable WEST_PYTHON to the Python interpreter you want to use. For example::
export WEST_PYTHON=/opt/anaconda/bin/python2.7
./setup.sh
-
---------------
Getting started
---------------
+To define environment variables post-installation, simply source the
+``westpa.sh`` script in the ``westpa`` directory from the command line
+or your setup scripts.
+
High-level tutorials of how to use the WESTPA software are available from
https://chong.chem.pitt.edu/wewiki/WESTPA_tutorials. Further, all WESTPA
command-line tools (located in ``westpa/bin``) provide detailed help when
