Minor comment changes
Merge branch 'master' of github.com:materialsproject/pymatgen
Merge branch 'master' of github.com:materialsproject/pymatgen
Merge branch 'master' of github.com:materialsproject/pymatgen
Merge branch 'master' of github.com:materialsproject/pymatgen
Reduce number of commits obtained by travis.
Updates to travis settings.
fix major bug with handedness of lattices
Merge branch 'master' of github.com:materialsproject/pymatgen
Fix some typos.
Change README to rst (test).
More updates to README.
Update tests readme.
More READNE updates
More README updates.
Fix bug in get_reduced_structure with disoredered structures
Increase default tolerance for structure matching to 0.5A.
Fix Yb psp.
Update version to 2.4.1
Change MANIFEST.