Added comments for pathfinding and priority queue.
NavigateTableViewController: Updated to display the image with the line.
Merge remote-tracking branch 'origin/master'
Updated navigation view controller to call dijkstra(path finding).
MapViewController - changed dijkstra from private to public.
Add edge changed to work correctly by not having adding edges bidirectionally.
Navigation controller prints out the nodes being returned by path finding.
added floor attribute for top nodes
Merge remote-tracking branch 'origin/master'
Modified to use single plist file now i.e map_data_all.
The maps tab has been moved to the navigation tab. It can be accessed using the toolbar.
Hours tab has been defined on the home screen which takes the user to a view controller.
implemented stepper to step through the navigation.
New method based on nextDirection which accepts 2 nodes and image and return an image with the line drawn.
Changed MapViewController functions to class methods. Fixed tests.
Updated Node object for floor coordinate.
Merge remote-tracking branch 'origin/master'
Fixed z coord in tests. Some tests still need changing
Added Exhibit model.