Added a note on how to (optionally) install rake.

diff --git a/README.rdoc b/README.rdoc
index b3eef11..fb6abb1 100644 (file)
--- a/README.rdoc
+++ b/README.rdoc
@@ -36,6 +36,8 @@ Windows from the command prompt (cmd.exe)
    c:\ruby --version
    c:\rake --version
 
+If you don't have rake installed, just run `gem install rake`
+
 Any response for Ruby with a version number greater than 1.8 is fine (should be
 around 1.8.6 or more). Any version of rake will do.