Build the sessions

Builds the session slides and moves their files into the respective folders

build_sessions(sessions_home = "./content/sessions/", build_all = FALSE)

Arguments

sessions_home	Character; path to the sessions folder
build_all	Logical; defines whether all session slides are bare built or only those that have been modified. Relies on a CSV file containing checksums that is created the first time build_sesssion() was used; default is FALSE