nfd: Update to version 0.3.1

Fixes: #4
diff --git a/nfd/debian/changelog b/nfd/debian/changelog
index 07573dc..7793a90 100644
--- a/nfd/debian/changelog
+++ b/nfd/debian/changelog
@@ -1,3 +1,17 @@
+nfd (0.3.1-ppa2~DISTRO) DISTRO; urgency=low
+
+  * New version based on NFD-0.3.1 (https://github.com/named-
+    data/NFD.git)
+
+ -- Alexander Afanasyev <alexander.afanasyev@ucla.edu>  Tue, 03 Mar 2015 22:30:03 -0800
+
+nfd (0.3.1-ppa1~DISTRO) DISTRO; urgency=low
+
+  * New version based on NFD-0.3.1 (https://github.com/named-
+    data/NFD.git)
+
+ -- Alexander Afanasyev <alexander.afanasyev@ucla.edu>  Tue, 03 Mar 2015 22:20:57 -0800
+
 nfd (0.3.0-ppa2~DISTRO) DISTRO; urgency=low
 
   * New version based on NFD-0.3.0 (https://github.com/named-