Revert "Indentation style changed to Horstmann"

This reverts commit f2259f712d.

Conflicts:

	src/GameWorld.cpp
	src/Systems/PhysicsSystem.cpp

src/main.cpp

@@ -2,7 +2,8 @@
 #include "Engine.h"
 
 int main(int argc, char* argv[])
-{	Engine engine(argc, argv);
+{
+	Engine engine(argc, argv);
 	while (engine.Running())
 		engine.Tick();