Tweak readme

diff --git a/README.md b/README.md
index ebeddf974bb955841cbc2bb9da5c878ceb7d1a36..d2f233714eea0a1957cad4b68fd5c93771216cdd 100644 (file)
--- a/README.md
+++ b/README.md
@@ -54,18 +54,20 @@ Optionally, installing the following will enable certain extensions:
 
 Now you're ready to build.  Enter the project directory and type
 
-    make
+    $ make
 
 to build dependencies and the Dyna compiler executable.  Run the test
-harness, just to make sure things built and are working:
+harness, just to make sure things built and are working.  Some of the
+doctests require that graphviz and additional packages be installed:
 
-    make tests
+    $ easy_install path.py
+    $ make tests
 
 Now you're ready to run a Dyna program. 
 
 * Run the python backend interactively (leave off the "-i" for bulk operation):
 
-        ./dyna -i examples/papa2.dyna
+    $ ./dyna -i examples/papa2.dyna
 
 * Work through the tutorial and homework exercises listed above.