First attempt at moving ship with touch. Current implementation is very hacky, but does seem to work.
Added a temporary ship.png file.
Created a ShipView class. Atm, this view does everything...
Changed the camera to use a virtual size and scale from there.
Merge branch 'master' into shipMove
Starting to do some restructuring.

The ship view does no longer hold the x and y coordinates, nor does it check for touches.
The Ship class now has a y and x value.
The Touch InputListener is resoponsible for handling touches.
Merge branch 'shipMove' of https://github.com/Jokab/Bullet-Inferno into shipMove
Empty commit to init dev branch
Implemented a moving enemy.
Added interface for a Weapon
Added more enemies.
Added interface for projectile
Added correct Enemy hierarchy (interface, abstract class and one standard concrete implementation).
Added javadoc to Enemy interface.
Added implementations for weapon and projectile with basic functionality
Merge branch 'firingFeature' into development

Merging all branches to dev to get a currect branch structure
Fixed merge conflicts
Configured packages
Added empty velocity interface to upload new branch
Added all interfaces to define the core
Added javadoc to Enemy interface.
Filled in overrided functions in EnemyShipImpl.
Removed obsolete model class World.