added description of new collision features.
added description of new collision features.

nabijaczleweli/ODE,keletskiy/ode,nabijaczleweli/ODE,keletskiy/ode,nabijaczleweli/ODE,keletskiy/ode,nabijaczleweli/ODE,keletskiy/ode,keletskiy/ode,keletskiy/ode,nabijaczleweli/ODE,nabijaczleweli/ODE