add .landscape.yaml configuration for landscape.io
add .landscape.yaml configuration for landscape.io

ibab/root_numpy,rootpy/root_numpy,scikit-hep/root_numpy,scikit-hep/root_numpy,ibab/root_numpy,ibab/root_numpy,scikit-hep/root_numpy,rootpy/root_numpy,rootpy/root_numpy,ndawe/root_numpy,scikit-hep/root_numpy,ndawe/root_numpy,rootpy/root_numpy,ibab/root_numpy,ndawe/root_numpy,ndawe/root_numpy