Merge branch 'pinyili2' into 'master'

.gitignore

README.md

mrdna/.ipynb_checkpoints/segmentmodel-checkpoint.py

mrdna/RELEASE-VERSION

mrdna/__init__.py

mrdna/arbdmodel/coords.py

mrdna/readers/__init__.py

mrdna/readers/cadnano_segments.py

mrdna/readers/libs/__init__.py

mrdna/readers/libs/base.py

mrdna/readers/libs/cadnano_utils.py

mrdna/readers/libs/constants.py

mrdna/readers/libs/pdb.py

mrdna/readers/libs/pyquaternion/LICENSE.txt

mrdna/readers/libs/pyquaternion/__init__.py

mrdna/readers/libs/pyquaternion/quaternion.py

mrdna/readers/libs/reader_lammps_init.py

mrdna/readers/libs/readers.py

mrdna/readers/libs/topology.py

mrdna/readers/libs/utils.py