plotting: improve interface so it's possible to pass rvalues

Change-Id: I387e462a889f7e3572d8e53a241c63aafed70912
diff --git a/lib/receiver/receiver_impl.cc b/lib/receiver/receiver_impl.cc
index ac60bfd..dcf6533 100644
--- a/lib/receiver/receiver_impl.cc
+++ b/lib/receiver/receiver_impl.cc
@@ -43,7 +43,7 @@
 
 #if 0
 /* Files included for debuging */
-#include "plotting/plotting.hpp"
+#include "grgsm/plotting.hpp"
 #include <pthread.h>
 #include <iomanip>
 #endif