[rtems-tools commit] Update readme.

[Chris Johns]

Module:    rtems-tools
Branch:    master
Commit:    6e75f4ebf5450154231a1f7c1c2ba97e60d2c074
Changeset: http://git.rtems.org/rtems-tools/commit/?id=6e75f4ebf5450154231a1f7c1c2ba97e60d2c074

Author:    Dhananjay Balan <mb.dhananjay at gmail.com>
Date:      Tue Jul  9 22:39:27 2013 +0530

Update readme.
Included useage instructions.

---

 tools/gdb/python/README.md |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/tools/gdb/python/README.md b/tools/gdb/python/README.md
index 567c195..8858a4f 100644
--- a/tools/gdb/python/README.md
+++ b/tools/gdb/python/README.md
@@ -2,3 +2,5 @@ rtems-gdb
 =========
 
 GDB extenstions to RTEMS.
+
+See [this blog post for instructions](http://dbalan.github.io/blog/2013/06/23/debugging-rtems-with-gdb/)