Fix Repo + add basics

Simulations/MassSpringSystemSimulator.h

@@ -1,6 +1,8 @@
 #ifndef MASSSPRINGSYSTEMSIMULATOR_h
 #define MASSSPRINGSYSTEMSIMULATOR_h
 #include "Simulator.h"
+#include "MassPoint.h"
+#include "Spring.h"
 
 // Do Not Change
 #define EULER 0
@@ -54,5 +56,9 @@ private:
 	Point2D m_mouse;
 	Point2D m_trackmouse;
 	Point2D m_oldtrackmouse;
+
+	//Mass points and springs
+	std::vector<std::shared_ptr<MassPoint>> masspoints;
+	std::vector<Spring> springs;
 };
 #endif