initial draft of lammpstrj file format
updated author
fixed py2.6 compatibility for formatted strings
preliminary triclinic box reading; could probably just create box vectors internally instead of converting to lengths/angles; needs proper test cases
merged with upstream
added writing for triclinic boxes; only test right now is for self-consistency (write/read)
added saver to Trajectory and a unit test for it
 vdw radius for phosphorus
forgot a comma
Merge pull request #639 from ctk3b/master

initial draft of lammpstrj file format
Update .travis.yml
Merge pull request #648 from msultan/phosphorus_vdw_radii

Phosphorus vdw radii
Merge pull request #1 from pandegroup/master

update