Delete Gemfile.lock
Update Gemfile
initialize project class with attributes
task can be marked as complete
add gemfile.lock
project can list all completed tasks (unsorted)
Project class .get_incomplete_tasks lists all tasks by id sorted by priority number
.get_completed_tasks lists all completed tasksed, sorted by creation date
.get_incomplete_tasks returns all incomplete tasks sorted by priority and date
terminal client greets user and presents options
task manager with working terminal client interface