Working on the sleep

src/intro.cpp

@@ -1,7 +1,6 @@
 #include "include/intro.h"
 
-void Intro::intro(){
-  Print print;
-  print.println("");
-
+void Intro::mainIntro(){
+  cout << "The world didn't end with a bang. It ended with a groan.. and the scratching of death fingers against steel shutters." << endl;
+  std::this_thread::sleep_for(std::chrono::milliseconds(3000));
 }