Fix error on packaging files from knot-protocol

arduino/libraries/KNoTThing/src/KNoTThing.h:13:24: fatal error: knot_types.h: No such file or directory
 #include "knot_types.h"
                        ^
compilation terminated.
exit status 1
diff --git a/Makefile b/Makefile
index 936682c..531be89 100644
--- a/Makefile
+++ b/Makefile
@@ -86,7 +86,8 @@
 	$(CP) -r $(KNOT_THING_FILES)/*.cpp ./$(KNOT_THING_NAME)/src
 
 	#Filling protocol directory
-	$(CP) -r $(KNOT_PROTOCOL_LIB_DIR)/*[^*.am] ./$(KNOT_THING_NAME)/src
+	$(CP) -r $(KNOT_PROTOCOL_LIB_DIR)/*.h ./$(KNOT_THING_NAME)/src
+	$(CP) -r $(KNOT_PROTOCOL_LIB_DIR)/*.c ./$(KNOT_THING_NAME)/src
 
 	#Filling hal headers directory
 	$(FIND) ./$(KNOT_HAL_HDR_LIB_DIR) \( ! -name '*linux*' -and -name '*.h' \) -exec $(CP) -r {} ./$(KNOT_THING_NAME)/src/hal \;