Added Node class, and move most functionality from Face to Node. Make connect take a Node, not a Face.
diff --git a/ndn-cpp/transport/transport.cpp b/ndn-cpp/transport/transport.cpp
index e16a879..cbcb659 100644
--- a/ndn-cpp/transport/transport.cpp
+++ b/ndn-cpp/transport/transport.cpp
@@ -10,7 +10,7 @@
 
 namespace ndn {
 
-void Transport::connect(Face &face) 
+void Transport::connect(Node &node) 
 {
   throw logic_error("unimplemented");
 }