Added a lot of comments

...p/src/main/java/com/furwaz/roomview/BuildingActivity.java

...s/app/src/main/java/com/furwaz/roomview/BuildingView.java

...src/main/java/com/furwaz/roomview/DirectionsActivity.java

...s/app/src/main/java/com/furwaz/roomview/MainActivity.java

...pp/src/main/java/com/furwaz/roomview/PathwayActivity.java

.../app/src/main/java/com/furwaz/roomview/PhotoActivity.java

...s/app/src/main/java/com/furwaz/roomview/RoomActivity.java

...s/app/src/main/java/com/furwaz/roomview/ZoneActivity.java

Sources/app/src/main/java/com/furwaz/roomview/ZoneView.java