Fixed the command-line tools usage

Change-Id: Ibf96ff95f4876836b6b259d28f7012ce170557cf
diff --git a/src/tray-menu.cpp b/src/tray-menu.cpp
index cf3b5b8..e95f251 100644
--- a/src/tray-menu.cpp
+++ b/src/tray-menu.cpp
@@ -450,7 +450,7 @@
               << "do shell script \""
                    "/bin/mkdir -vp /usr/local/bin; "
                    "/bin/ln -s -f '" +  QCoreApplication::applicationDirPath() +
-                     "/../Resources/bin/ndn" + "' /usr/local/bin/ndn;"
+                     "/../Resources/ndn" + "' /usr/local/bin/ndn;"
                    "\" with administrator privileges");
 #endif
 }