docs: Adding references to the new TR

Change-Id: I5235462cad6f01751bcd5141b2c3e14585d5baf3
diff --git a/docs/source/_templates/indexcontent.html b/docs/source/_templates/indexcontent.html
index 6a44ca6..67f376e 100644
--- a/docs/source/_templates/indexcontent.html
+++ b/docs/source/_templates/indexcontent.html
@@ -69,8 +69,10 @@
   <p>
 <hr class="docutils" />
 <dl class="docutils">
-<dt>If you refer to ndnSIM in a published work, please cite the following paper, not just the ndnSIM website. Thank you!</dt>
-<dd><strong>A. Afanasyev, I. Moiseenko, and L. Zhang, &#8220;ndnSIM: NDN simulator for NS-3,&#8221; NDN, Technical Report NDN-0005, 2012</strong> (<a class="reference external" href="http://lasr.cs.ucla.edu/afanasyev/bibwiki/bibtex/367">BibTex</a>)</dd>
+<dt>If you refer to ndnSIM in a published work, please cite the following papers, not just the ndnSIM website. Thank you!</dt>
+<dd><strong>S. Mastorakis, A. Afanasyev, I. Moiseenko, and L. Zhang, &#8220;ndnSIM 2.0: A new version of the NDN simulator for NS-3,&#8221; NDN, Technical Report NDN-0028, 2015</strong> (<a class="reference external" href="http://named-data.net/techreport/ndn-0028-1-ndnsim-v2.pdf">PDF</a>) (<a class="reference external" href="http://lasr.cs.ucla.edu/afanasyev/bibwiki/bibtex/399">BibTex</a>)</dd>
+<dd><strong>A. Afanasyev, I. Moiseenko, and L. Zhang, &#8220;ndnSIM:
+  NDN simulator for NS-3,&#8221; NDN, Technical Report NDN-0005, 2012</strong> (<a class="reference external" href="http://named-data.net/wp-content/uploads/TRndnsim.pdf">PDF</a>) (<a class="reference external" href="http://lasr.cs.ucla.edu/afanasyev/bibwiki/bibtex/367">BibTex</a>)</dd>
 </dl>
   </p>