As a player So I can see the state of the system I want to print out the grid of cells
As a player So I can set up the grid I want to create a board with specific cells living
As a player So I can see a realistic game of life I want cells to die if they have fewer than two neighbours
As a player So I can see the system change slowly I want to step the system forward one step
As a player So I can see a realistic game of life I want cells to live if they have two or three neighbours
As a player So I can see a realistic game of life I want cells to die if they have more than three neighbours
As a player So I can see a realistic game of life I want a dead cell to come alive if it has three neighbours