docs: improve README.md
Change-Id: Iba7aea52bb67dd8ee788734e1141ab2459167090
diff --git a/docs/releases.rst b/docs/releases.rst
index 7312919..45d9377 100644
--- a/docs/releases.rst
+++ b/docs/releases.rst
@@ -1,5 +1,5 @@
-ndn-cxx Versions
-++++++++++++++++
+All ndn-cxx Releases
+++++++++++++++++++++
.. toctree::
:hidden:
@@ -28,6 +28,8 @@
`src (git) <https://github.com/named-data/ndn-cxx/releases/tag/ndn-cxx-0.6.5>`__,
`src (tarball) <https://named-data.net/downloads/nfd-0.6.5.tar.bz2>`__ (`checksum <https://named-data.net/downloads/nfd-0.6.5.tar.bz2.sha256>`__)
+* **ndn-cxx version 0.6.4 was skipped**
+
* **ndn-cxx version 0.6.3**
(:doc:`Release Notes <release-notes/release-notes-0.6.3>`, `Documentation <https://named-data.net/doc/ndn-cxx/0.6.3/>`__)