Adds Rat Images

Cell Size = 100x60
Adds Gnome Sprite Sheet (properly setup)

Cell size: 69x121 -- Does not include "fallen" sprite as he is a
different size than all of these.
Updates Rat Sprite Map
Adds Potato Image

Cell Size: 60x60
Updates Potato Asset To Be Horizontal

Cells are still 60x60
Adds Correct Gnome Sprite Sheet

Cell size: 70x125
Adds levels and levelLoader that let you have levels
Updates Gnome Sheet with left-facing gnomes
Add gh-pages/* to .gitignore
Merge remote-tracking branch 'origin/murza'
Add Highrise component with sprite
Add rat animations
Merge remote-tracking branch 'origin/hannah'
Added a way to load highrise components
Adds Gnome Sprites with idle anims and dash states
Pressing 'o' generates a new highrise