added AAItemManager interface
added project and workspace settings to repo
Added ALog, DLog, begun work on AAItemManager.m
Finished AAItemManager, added tests, rewriting tenth step view controller
AAItemManager working, add better file syncing
final commit before merge
Merge branch 'AAItemManager'

Conflicts:
	Classes/AAStepItem.h
	Classes/AAStepItem.m
	Classes/AATenthStepItemViewController.m
	Steps.xcodeproj/project.pbxproj