Format README.md to Markdown

Change-Id: I6b26df5633cbdfb40064a3aab48e506bbad08097
diff --git a/README.md b/README.md
index f7ff495..c230adf 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,6 @@
-StorPool Storage Backend for Cinder
--------------------------------
+# StorPool Storage Backend for Cinder
 
-Overview
-========
+# Overview
 
 This charm provides a StorPool storage backend for use with the Cinder
 charm.
@@ -10,18 +8,17 @@
 To use:
 
     juju deploy cinder
-    
+
     juju deploy cinder-storpool \
         --config storpool_template="my_template" \
         --config sp_api_http_host="1.2.3.4" \
         --config sp_auth_token=1234567890123456789
-    
+
     juju add-relation cinder-storpool cinder
 
-Configuration
-=============
+# Configuration
 
 See config.yaml for details of configuration options.
 
-Options with a blank 'default' field are mandatory and have to be provided by
-an administrator.
+Options with a blank 'default' field are mandatory and have to be
+provided by an administrator.