update mdtraj and xgboost

conda install -y -q -c omnia pdbfixer=1.4

conda install -y -q -c conda-forge joblib=0.11

conda install -y -q -c conda-forge six=1.10.0

conda install -y -q -c conda-forge mdtraj=1.9.0

conda install -y -q -c conda-forge mdtraj=1.9.1

conda install -y -q -c conda-forge scikit-learn=0.19.1

conda install -y -q -c conda-forge setuptools=36.2.2

conda install -y -q -c conda-forge keras=1.2.2

conda install -y -q -c conda-forge networkx=1.11

conda install -y -q -c conda-forge xgboost=0.6a2

conda install -y -q -c conda-forge pillow=4.3.0

conda install -y -q -c conda-forge pandas=0.19.2

conda install -y -q -c conda-forge $tensorflow=1.4.0

conda install -y -q -c conda-forge requests=2.18.4

conda install -y -q -c conda-forge numpy=1.13.3

conda install -y -q -c rdkit rdkit=2017.09.1

yes | pip install xgboost==0.7.post3