Formatting cleanups, doc updates and whatnot

Change-Id: Ica8298353be22f947c8e8a03d8dc29ded9cb26dd
diff --git a/lib/cinder b/lib/cinder
index deace68..d621e69 100644
--- a/lib/cinder
+++ b/lib/cinder
@@ -64,6 +64,10 @@
 VOLUME_GROUP2=${VOLUME_GROUP2:-stack-volumes2}
 VOLUME_NAME_PREFIX=${VOLUME_NAME_PREFIX:-volume-}
 
+
+# Functions
+# ---------
+
 # _clean_volume_group removes all cinder volumes from the specified volume group
 # _clean_volume_group $VOLUME_GROUP $VOLUME_NAME_PREFIX
 function _clean_volume_group() {
@@ -432,6 +436,7 @@
     fi
 }
 
+
 # Restore xtrace
 $XTRACE