Tempest Coding Guide

* Adding HACKING.rst as Tempest Coding Guide
* Fixing the section/title formater markup's length

Change-Id: Ic61d287cd3bbf3adc5f7d98b17957a5be125f613
diff --git a/HACKING.rst b/HACKING.rst
index eafa81b..1db1e26 100644
--- a/HACKING.rst
+++ b/HACKING.rst
@@ -1,3 +1,7 @@
+Tempest Coding Guide
+====================
+
+
 Test Data/Configuration
 -----------------------
 - Assume nothing about existing test data