nsync: Change of ndn::ptr_lib to std namespace

Change-Id: I38c3ba68b701709a3a1b41cce327e030a391ba17
Refs: #2110
diff --git a/AUTHORS.md b/AUTHORS.md
index 838adc5..29f1054 100644
--- a/AUTHORS.md
+++ b/AUTHORS.md
@@ -33,6 +33,7 @@
 
     * Yingdi Yu           <http://irl.cs.ucla.edu/~yingdi/web/index.html>
     * Alexander Afanasyev <http://lasr.cs.ucla.edu/afanasyev/index.html>
+    * Spyridon Mastorakis <http://cs.ucla.edu/~mastorakis/>
 
 
 ## Queries about NLSR