add initial examples, replacing the 'Demos/Demos3'. Will make it work cross-platform, OpenGL3/OpenGL2 and add more examples to it.

examples/BasicDemo/main.cpp

@@ -0,0 +1,43 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2015 Google Inc. http://bulletphysics.org
+
+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.
+*/
+
+
+#include "BasicExample.h"
+
+#include "../CommonInterfaces/ExampleInterface.h"
+#include "../CommonInterfaces/CommonGUIHelperInterface.h"
+
+
+
+
+int main(int argc, char* argv[])
+{
+	struct PhysicsInterface* pint = 0;
+	
+	DummyGUIHelper noGfx;
+
+	int option = 0;
+
+	ExampleInterface*    example = BasicExampleCreateFunc(pint, &noGfx, option);
+	
+	example->initPhysics();
+	example->stepSimulation(1.f/60.f);
+	example->exitPhysics();
+
+	delete example;
+
+	return 0;
+}
+