Create map model
generate MapChip model
MapItem Model Add
haml-rails install
.erb to haml (map_chips)
.erb to haml (map_chips)
layout/application.html.erb to haml
map_chips edit
maps to map_item_id Add
Add index X/Y to maps
map_item :x, :y delegate
fix
x/y Validation Add
guard rspec gem Add