adds moving between rooms
Merge branch 'master' of https://github.com/guillaume-gouchon/dungeonhero

Conflicts:
	android/app/src/main/java/com/glevel/dungeonhero/activities/GameActivity.java
	android/app/src/main/java/com/glevel/dungeonhero/models/Chapter.java
	android/app/src/main/java/com/glevel/dungeonhero/models/dungeons/Dungeon.java
	android/app/src/main/java/com/glevel/dungeonhero/models/dungeons/Room.java