docs+build: Prepare release of version 0.4.0

Change-Id: Ie5dfb3a1c7674cd426b89721c91ad59327517764
Refs: #3178
diff --git a/docs/releases.rst b/docs/releases.rst
new file mode 100644
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+ndn-cxx Versions
+++++++++++++++++
+
+.. toctree::
+   :hidden:
+   :maxdepth: 1
+
+   release-notes/release-notes-0.4.0
+   release-notes/release-notes-0.3.4
+   release-notes/release-notes-0.3.3
+   release-notes/release-notes-0.3.2
+   release-notes/release-notes-0.3.1
+   release-notes/release-notes-0.3.0
+   release-notes/release-notes-0.2.0
+   release-notes/release-notes-0.1.0
+
+* **ndn-cxx version 0.4.0**
+  (:doc:`Release Notes <release-notes/release-notes-0.4.0>`, `Documentation <http://named-data.net/doc/ndn-cxx/0.4.0/>`__)
+
+  `src (git) <https://github.com/named-data/ndn-cxx/releases/tag/ndn-cxx-0.4.0>`__,
+  `src (tarball) <http://named-data.net/downloads/nfd-0.4.0.tar.bz2>`__ (`checksum <http://named-data.net/downloads/nfd-0.4.0.tar.bz2.sha256>`__)
+
+* **ndn-cxx version 0.3.4**
+  (:doc:`Release Notes <release-notes/release-notes-0.3.4>`, `Documentation <http://named-data.net/doc/ndn-cxx/0.3.4/>`__)
+
+  `src (git) <https://github.com/named-data/ndn-cxx/releases/tag/ndn-cxx-0.3.4>`__,
+  `src (tarball) <http://named-data.net/downloads/nfd-0.3.4.tar.bz2>`__ (`checksum <http://named-data.net/downloads/nfd-0.3.4.tar.bz2.sha256>`__)
+
+* **ndn-cxx version 0.3.3**
+  (:doc:`Release Notes <release-notes/release-notes-0.3.3>`, `Documentation <http://named-data.net/doc/ndn-cxx/0.3.3/>`__)
+
+  `src (git) <https://github.com/named-data/ndn-cxx/releases/tag/ndn-cxx-0.3.3>`__,
+  `src (tarball) <http://named-data.net/downloads/nfd-0.3.3.tar.bz2>`__ (`checksum <http://named-data.net/downloads/nfd-0.3.3.tar.bz2.sha256>`__)
+
+* **ndn-cxx version 0.3.2**
+  (:doc:`Release Notes <release-notes/release-notes-0.3.2>`, `Documentation <http://named-data.net/doc/ndn-cxx/0.3.2/>`__)
+
+  `src (git) <https://github.com/named-data/ndn-cxx/releases/tag/ndn-cxx-0.3.2>`__,
+  `src (tarball) <http://named-data.net/downloads/nfd-0.3.2.tar.bz2>`__ (`checksum <http://named-data.net/downloads/nfd-0.3.2.tar.bz2.sha256>`__)
+
+* **ndn-cxx version 0.3.1**
+  (:doc:`Release Notes <release-notes/release-notes-0.3.1>`, `Documentation <http://named-data.net/doc/ndn-cxx/0.3.1/>`__)
+
+  `src (git) <https://github.com/named-data/ndn-cxx/releases/tag/ndn-cxx-0.3.1>`__,
+  `src (tarball) <http://named-data.net/downloads/nfd-0.3.1.tar.bz2>`__ (`checksum <http://named-data.net/downloads/nfd-0.3.1.tar.bz2.sha256>`__)
+
+* **ndn-cxx version 0.3.0**
+  (:doc:`Release Notes <release-notes/release-notes-0.3.0>`, `Documentation <http://named-data.net/doc/ndn-cxx/0.3.0/>`__)
+
+  `src (git) <https://github.com/named-data/ndn-cxx/releases/tag/ndn-cxx-0.3.0>`__,
+  `src (tarball) <http://named-data.net/downloads/nfd-0.3.0.tar.bz2>`__ (`checksum <http://named-data.net/downloads/nfd-0.3.0.tar.bz2.sha256>`__)
+
+* **ndn-cxx version 0.2.0**
+  (:doc:`Release Notes <release-notes/release-notes-0.2.0>`, `Documentation <http://named-data.net/doc/ndn-cxx/0.2.0/>`__)
+
+  `src (git) <https://github.com/named-data/ndn-cxx/releases/tag/ndn-cxx-0.2.0>`__,
+  `src (tarball) <http://named-data.net/downloads/nfd-0.2.0.tar.bz2>`__ (`checksum <http://named-data.net/downloads/nfd-0.2.0.tar.bz2.sha256>`__)
+
+  - ndn-cxx version 0.2.0-rc1
+    `src (git) <https://github.com/named-data/ndn-cxx/releases/tag/ndn-cxx-0.2.0-rc1>`__
+
+  - ndn-cxx version 0.2.0-rc2
+    `src (git) <https://github.com/named-data/ndn-cxx/releases/tag/ndn-cxx-0.2.0-rc2>`__
+
+* **ndn-cxx version 0.1.0**
+  (:doc:`Release Notes <release-notes/release-notes-0.1.0>`, `Documentation <http://named-data.net/doc/ndn-cxx/0.1.0/>`__)
+
+  `src (git) <https://github.com/named-data/ndn-cxx/releases/tag/ndn-cxx-0.1.0>`__,
+  `src (tarball) <http://named-data.net/downloads/nfd-0.1.0.tar.bz2>`__ (`checksum <http://named-data.net/downloads/nfd-0.1.0.tar.bz2.sha256>`__)
+
+  - ndn-cxx version 0.1.0-rc1
+    `src (git) <https://github.com/named-data/ndn-cxx/releases/tag/ndn-cxx-0.1.0-rc1>`__