1. removed ExitNode, TravelNode, ExhibitNode classes
2. Added plist files
added plist files
removed node subclasses
Added Maps group
Merge remote-tracking branch 'origin/master'
deleted map files (not part of the project)
added map pdfs with paths
added path pdfs
added top_paths
removed type attribute from plist files
added unmarked maps and plist files. removed ‘type’ attribute from plist files
fixed CpResource errors due to removed old map files
added coordinates for mid and star levels
added ‘isSourceOrDestination’ attribute for each node in the plist files
added uids for each node on the map
moved files
i don't know how to use git
changed location of files
Modified PriorityQueue.h, Added comparable.h for comparison of objects in PQ
Modified PriorityQueue.h .m
Modied Node class and MapViewController.m