Changes to level tiles

New tilesets and level layout.
Debugged my new level
Re-textured level without silly old platformer tiles.

The level is stable without those old platformer tiles. Adding a
background layer in Tiled still causes some player visibility issues, so
I removed the layer.
Renamed my level so I could merge with Mike's Dev Branch
Merge branch 'development' of https://github.com/MikePaNtZ/PiN into MikePaNtZ-development

Conflicts:
	Platformer/Content/Content.contentproj
	Platformer/Content/Levels/0.tmx
	Platformer/Content/Tiles/Thumbs.db
Merge branch 'MikePaNtZ-development'
Merge branch 'development' of https://github.com/Lakon/PiN into Lakon-development
Merge branch 'Lakon-development'
I tried command line merging...
Merge pull request #3 from MikePaNtZ/development

Development
Merge pull request #4 from MikePaNtZ/development

Development
Added Hero derived classes

I added 3 hero subclasses that override the LoadContent method so far. I
also changed the game icon and game thumbnail images. No more Indiana.
Fixed compile errors

changed modifiers in derived classes' LoadContent methods to reflect
access modifiers of base class. There is still a warning for the
LoadContent method in Hero class.
Merge pull request #6 from Daikatana/master

Hero derived classes added