model: Slight modification with wire format processing

Now it is possible to convert Name from/to wire format via ndn::Face
helper method (since Face is getting configured with specific wire
format)

Refs #1008 (http://redmine.named-data.net/issues/1008)
diff --git a/apps/ndn-consumer.cc b/apps/ndn-consumer.cc
index b6dba28..adbce0f 100644
--- a/apps/ndn-consumer.cc
+++ b/apps/ndn-consumer.cc
@@ -27,6 +27,7 @@
 #include "ns3/string.h"
 #include "ns3/boolean.h"
 #include "ns3/uinteger.h"
+#include "ns3/integer.h"
 #include "ns3/double.h"
 
 #include "ns3/ndn-app-face.h"