Initial commit
Update .gitignore
First puzzle model classes
Demos presented in the session of 8/10/2014
Create README.md
Created a new folder organization for the code base
Merge commit 'e2de1ccb90d80269800b3cfa0ac9ccfefd6cab82'
Consolidated organization of the code base
Added demos relative to polimorfism and canonical methods
Completed MovesStack test suit
Added Move implementation and corresponding tests
Added Piece and Grid implementations
Completed puzzle model implementation and corresponding unit tests
Added first Android demo
Merge branch 'master' of github.com:isel-leic-poo/14-15-Inv-LI21N

Conflicts:
	.gitignore
	Demos/src/poo/demos/rubish/pens/CheapPen.java
	Demos/src/poo/demos/rubish/pens/ErasablePen.java
	Demos/src/poo/demos/rubish/pens/Pen.java
	Demos/src/poo/demos/rubish/pens/PenApp.java
	Demos/src/poo/demos/rubish/vehicles/Car.java
	Demos/src/poo/demos/rubish/vehicles/Vehicle.java
	PuzzleTests/src/poo/demos/puzzle/model/GridTestSuite.java
	PuzzleTests/src/poo/demos/puzzle/model/PieceTestSuit.java
	README.md