Update version in documentation.
Update version in documentation.

palashahuja/mlpack,palashahuja/mlpack,ranjan1990/mlpack,ajjl/mlpack,darcyliu/mlpack,darcyliu/mlpack,ajjl/mlpack,darcyliu/mlpack,ranjan1990/mlpack,ajjl/mlpack,palashahuja/mlpack,ranjan1990/mlpack