updated project preferences
refactored general code from shiny server/ui into global.R, and refactored the schedule code to make use of plotting functions within the library
refactored example code to make use of the randomAccentModelInput, otherwise the packages cannot be installed from scractch
added new functions to namespace, and added Rdocs to .gitignore
refactored plotting functions in graph script within the package
renamed optimize function because of conflict with optim package
added random generator for AccentModelInput instance
initiate logger when starting Shiny