added dihedral calculation for all the chi angles (chis 1-4 )
modified chi calculations to the updated MDTraj codebase
modified chi calculations to the updated MDTraj codebase
fixed the function compute_chi_all
 added definitions to docstring
fixed return as type int for residue ids
Fixes issue #229
Oops forgot to add PDB file for tests.
Merge pull request #230 from kyleabeauchamp/fix_dataframe

Fixes issue #229
Merge branch 'master' of github.com:raviramanathan/mdtraj into raviramanathan-master
Merge pull request #224 from raviramanathan/master

added dihedral calculation for all the chi angles (chis 1-4 )
Add test to chi angle calculation and clean up logic slightly
Merge branch 'master' into chi
minor
new name
Merge pull request #232 from rmcgibbo/chi

Fixes for #224
Delete tICA.rst
Update index.rst
Seek and tell
Implement seek for mdcrd. This isn't going to be fast, but it'll get the job done I guess