made frame resizable, added fullScreen function (commented out)

MouseAndKey.pde

     save_gse();
     println("Saved");
   }
+  if (key == ENTER){
+    //+ frame.setSize
+   // fullScreen();
+  }
 }

gse.pde

   marker = new Marker[200];
   frameRate(24);
   size(960, 540);
+  //fullScreen;
+  frame.setResizable(true);
   smooth();
   drop = new SDrop(this);
   backgroundImage = loadImage("assets/background.jpg");