Switch README to ReStructuredText format so PyPI is happy

Change-Id: I40f1ef32a4a2b8e816e53867f37a255fa2244bf4
diff --git a/VERSION b/VERSION
index 0c62199..ee1372d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.2.1
+0.2.2