Include site-packages directory.
diff --git a/Tools/msi/msi.py b/Tools/msi/msi.py
index 2c9a9ac..8d21f6c 100644
--- a/Tools/msi/msi.py
+++ b/Tools/msi/msi.py
@@ -876,6 +876,7 @@
         dirs[dir]=lib
         lib.glob("*.txt")
         if dir=='site-packages':
+            lib.add_file("README.txt", src="README")
             continue
         files = lib.glob("*.py")
         files += lib.glob("*.pyw")