Added an example on how to use the derivative observations together with regular observations in GPy
Added an example on how to use the derivative observations together with regular observations in GPy

esiivola/GPYgradients,esiivola/GPYgradients,SheffieldML/GPy,SheffieldML/GPy,SheffieldML/GPy,esiivola/GPYgradients,SheffieldML/GPy,esiivola/GPYgradients