added pathfinding
Merge branch 'master' of https://github.com/AdlerMobile/mobile-app into temp

merge updates from master
README update
Modified and tested PriorityQueue;
Modified and tested MapViewController;
(Unintended)
Project Settings modification. (Not sure why)
Commit before pull 9:04pm 3/16
Merge remote-tracking branch 'origin/master' into temp
Unsuccessful Priority Queue during Tests.
Modified and tested path-finding.
Merge remote-tracking branch 'origin/master' into temp
Complete and tested pathfinding. Added comments.