all: Adding typedefs near forward declarations of Interest/ContentObject/Name

refs #29
diff --git a/model/ndn-global-router.h b/model/ndn-global-router.h
index 582b6e1..1ef6329 100644
--- a/model/ndn-global-router.h
+++ b/model/ndn-global-router.h
@@ -37,6 +37,8 @@
 class Face;
 class Name;
 
+typedef Name NameComponents;
+
 /**
  * @brief Class representing global router interface for ndnSIM
  */