Minimum edits to get package to load on new install.

Merge pull request #7 from Frost-group/update_scheme_2

Merge branch 'master' into update_scheme_2

Added documentation to update.jl; Commented the unused modules

Added documentation to the core components of the code, updated readme

rearranged redundant files

Merge branch 'update_scheme_2' of https://github.com/Frost-group/Tethys.jl into update_scheme_2

autocorrelation changes

add length condition for swap

additional plots

Feynman eff mass, plotting functions and simulations

Merge branch 'update_scheme_2' of https://github.com/Frost-group/Tethys.jl into update_scheme_2

add direction preference in arc sampling; old sampling saved in tempor_save

Merge branch 'update_scheme_2' of https://github.com/Frost-group/Tethys.jl into update_scheme_2

insert arc bug fix