change make

Makefile

-API_PATH=../ar_sanbox_lib
+API_PATH=../ar_sandbox_lib
 CFLAGS=-std=c++11 -Wall -Wextra -g
 OPENCVFLAG=`pkg-config --libs --cflags opencv`
-CAMERAFLAG=-lrealsense2
 CCP=g++
 
 app: app.o
-	$(CCP) $(OPENCVFLAG) $(CAMERAFLAG) -L$(API_PATH) -lsandbox $^ -o $@
+	$(CCP) $(OPENCVFLAG) -L$(API_PATH) -lsandbox  $^ -o $@
 
 %.o: %.cpp
 	$(CCP) $(CFLAGS) -I$(API_PATH)/includes -c $< -o $@ 

app.cpp

 
-#include "sandbox.h"
+#include "../ar_sandbox_lib/includes/sandbox.h"
 #include <numeric>
 #include <fstream>
 #include <string>
@@ -53,7 +53,7 @@ Mat coloredFrame(Mat frameDepth)
 
 void showLevel()
 {
-    char windowName[] = "Sandbox";
+    //char windowName[] = "Sandbox";
     Mat frameData;
     client.getDepthFrame().copyTo(frameData);
     Mat colored;