tools: nfdc route commands accept and print RouteOrigin strings

refs #3987

Change-Id: I47594546e3fe9279fff5ea6ade9ce38cb3b05b6c
diff --git a/tools/nfdc/command-arguments.hpp b/tools/nfdc/command-arguments.hpp
index 1bec816..010c1c2 100644
--- a/tools/nfdc/command-arguments.hpp
+++ b/tools/nfdc/command-arguments.hpp
@@ -37,6 +37,7 @@
 namespace nfdc {
 
 using ndn::nfd::FacePersistency;
+using ndn::nfd::RouteOrigin;
 using ndn::util::FaceUri;
 
 /** \brief contains named command arguments