Update the NDNCERT library to version NDNCERT v2

spec:[https://github.com/named-data/ndncert/wiki/NDNCERT-Protocol-new]

Change-Id: Ia480a8e70c4b38ca170dfe2fcf50d1265ab65f46
diff --git a/AUTHORS.md b/AUTHORS.md
index 5c29bdf..2a0da5c 100644
--- a/AUTHORS.md
+++ b/AUTHORS.md
@@ -3,7 +3,7 @@
 
 ## The primary authors are (and/or have been):
 
-* Zhiyi Zhang            <http://irl.cs.ucla.edu/~zhiyi/>
+* Zhiyi Zhang            <https://zhiyi-zhang.com>
 * Alexander Afanasyev    <http://lasr.cs.ucla.edu/afanasyev/index.html>
 * Lixia Zhang            <http://web.cs.ucla.edu/~lixia/>