add cycle
Merge branch 'master' of github.com:wesbarnett/MolecularDynamics.jl into dih_angle
get all dih angles in a chain
get all dih angles in a chain
add ability to read 6 digits in index file
fix bug with reading first 6 digit number twice
Merge branch 'master' into dih_angle
fix type error
now cycles through angles
now cycles through frames