Merge pull request #8 from mfrancis95/mike

Window size change, Builder updates, and additional changes
Create README.md
Update README.md
Updated readme.md

added to high priority: 
- Way to Queue up actions - i.e: pathfinding for movement.
- AI(pathfinding, strategy, attacking, spawning)
- UI design(InventoryPane, ActionPane, InfoPane)
- Entity Actions(heal, attack, move)
insignificant changes to readme
Update README.md
Update README.md
Added MatrixDimension, UIPane, GraphicButton

Made changes to survivor, location.
Made changes to UIPane

Calculates dimension of the pane based on size and layout.
Changed underlying implementation to LinkedHashMap. Added methods for iterating through Entity and tile Locations.
Changed underlying implementation to LinkedHashMap. Added method for iterating through tile Locations.
Now loops through tiles more efficiently.