Added:
	-AirplaneListActivity (Empty)
	-Retreive Destination and Departure altitudes and added to
	 mapActivity in bundle
Added: 
	-Working list activity with sample data
	-added list_item.xml, defines layout of a 
	 single item in list activity
Merge pull request #9 from fssaez/master

Cambios 4/23
Changes:
	- Placed activities in: com.navlog.activities
	- Placed models in: com.navlog.models
Merge pull request #12 from ManuelCintron/master

updating