rename from .h to .hpp

src/main.cpp

@@ -1,4 +1,4 @@
-#include "./main.h"
+#include "./main.hpp"
 
 int main(int argc, char *argv[])
 {

src/main.hpp

@@ -1,7 +1,7 @@
 #include <iostream>
-#include "./setup.h"
-#include "./command.h"
-#include "./commands.h"
+#include "./setup.hpp"
+#include "./command.hpp"
+#include "./commands.hpp"
 
 Setup &setup = Setup::Instance();
 Command &command = Command::Instance();