[msitools] README: update for msidiff/msidump

[Thomas Hindoe Paaboel Andersen <thomashpa src gnome org>]

commit a5d633036a6ce906072a493d01476145d53e6e9a
Author: Thomas Hindoe Paaboel Andersen <phomes gmail com>
Date:   Tue May 21 21:09:29 2013 +0200

    README: update for msidiff/msidump

 README |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/README b/README
index aaa4089..143e1fe 100644
--- a/README
+++ b/README
@@ -12,6 +12,10 @@ Provided tools include:
 
 - msibuild, a low-level tool to create MSI files
 
+- msidiff, compares contents of two MSI files with diff
+
+- msidump, dumps raw MSI tables and stream content
+
 - msiextract, to inspect and extract the files of an MSI file
 
 - wixl, a WiX-like tool, that builds Windows Installer (MSI) packages