Environments have a specific two-dimensional size (height x width)
add to_s method: prints living cells as 'X' and dead cells as '_'
The entire environment can easily be populated by cells (living or dead)

Cells populate environment in a two-dimensional array
The entire environment can easily be populated by cells (living or dead)

- add to_s method to puts environment
— refactor culture_cells method
— refactor creation of cells array upon initialization
— test for array of cells
Add habitability attribute to Environment objects

— in a 100% habitable environment, all randomly cultured cells will be living
— in a 0% habitable environment, all randomly cultured cells will be dead
— etc.
The environment can be populated by (living or dead) cells in a specific location

— allows for setting up specific initial shapes (blinker, basic square)
for culture_cell (in specific location), set default so cells are living unless otherwise specified
Merge pull request #2 from alanflorendo/environment

Environment