Add two HotNets'15 papers.

Changelog.txt

@@ -1,3 +1,7 @@
+* 2015-11-20
+	- Added paper ``Can Censorship Measurements Be Safe(r)?''
+	- Added paper ``A Case for Marrying Censorship Measurements with Circumvention''
+
 * 2015-11-05
 	- Added paper ``Rook: Using Video Games as a Low-Bandwidth Censorship Resistant Communication Platform''
 	- Added paper ``Known Unknowns: An Analysis of Twitter Censorship in Turkey''

header.tpl

@@ -73,7 +73,7 @@
       (<a href="author_reverse.html">reverse</a>) <a href="author.html">author</a> <br />
       Feedback: <a href="mailto:phw@nymity.ch">phw@nymity.ch</a> (<a
       href="https://nymity.ch/openpgp_public_key.txt">OpenPGP</a>) <br />
-      Last updated: <a href="Changelog.txt">2015-11-05</a> <br />
+      Last updated: <a href="Changelog.txt">2015-11-20</a> <br />
     </div>
   </div>
 </div>

references.bib

@@ -1,3 +1,21 @@
+@inproceedings{Nisar2015a,
+	author = {Aqib Nisar and Aqsa Kashaf and Zartash Afzal Uzmi and Ihsan Ayyub Qazi},
+	title = {A Case for Marrying Censorship Measurements with Circumvention},
+	booktitle = {Hot Topics in Networks},
+	publisher = {ACM},
+	year = {2015},
+	url = {http://conferences.sigcomm.org/hotnets/2015/papers/nisar.pdf},
+}
+
+@inproceedings{Jones2015b,
+	author = {Ben Jones and Nick Feamster},
+	title = {Can Censorship Measurements Be Safe(r)?},
+	booktitle = {Hot Topics in Networks},
+	publisher = {ACM},
+	year = {2015},
+	url = {http://conferences.sigcomm.org/hotnets/2015/papers/jones.pdf},
+}
+
 @inproceedings{Vines2015a,
 	author = {Paul Vines and Tadayoshi Kohno},
 	title = {{R}ook: Using Video Games as a Low-Bandwidth Censorship Resistant Communication Platform},