first step in refactoring/cleaning up demos

Demos/ConstraintDemo/ConstraintDemo.h

@@ -0,0 +1,36 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose, 
+including commercial applications, and to alter it and redistribute it freely, 
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+#ifndef CONSTRAINT_DEMO_H
+#define CONSTRAINT_DEMO_H
+
+#include "DemoApplication.h"
+
+///ConstraintDemo shows how to create a constraint, like Hinge or GenericD6constraint
+class ConstraintDemo : public DemoApplication
+{
+	public:
+
+	void	initPhysics();
+
+	virtual void clientMoveAndDisplay();
+
+	virtual void displayCallback();
+	
+	virtual void	clientResetScene()
+	{
+	}
+};
+
+#endif //CONSTRAINT_DEMO_H