Add inverse kinematics example with implementations by Sam Buss.

Uses Kuka IIWA model description and 4 methods:
Selectively Damped Least Squares,Damped Least Squares,
Jacobi Transpose, Jacobi Pseudo Inverse
Tweak some PD values in Inverse Dynamics example and Robot example.

examples/ExampleBrowser/OpenGLExampleBrowser.cpp

@@ -800,6 +800,7 @@ bool OpenGLExampleBrowser::init(int argc, char* argv[])
         s_app = new SimpleOpenGL2App(title,width,height);
         s_app->m_renderer = new SimpleOpenGL2Renderer(width,height);
     } 
+
 #ifndef NO_OPENGL3
 	else
     {