Added Entityx logic (Movement|Render|Destruct)

src/entities/RenderSystem.cpp

@@ -0,0 +1,7 @@
+#include "RenderSystem.h"
+
+#include <iostream>
+
+void RenderSystem::update(entityx::EntityManager &entities, entityx::EventManager &events, entityx::TimeDelta dt) {
+      //std::cout << "Rendering delta: " << dt << std::endl;
+}