A test-driven implementation of Conway's Game of Life in Ruby.

1. Install with gem install ruby_life

2. Run it with ruby_life

1. Any live cell with fewer than two live neighbours dies, as if caused by under-population.

2. Any live cell with two or three live neighbours lives on to the next generation.

3. Any live cell with more than three live neighbours dies, as if by overcrowding

4. Any dead cell with exactly three live neighbours becomes a live cell, as if by reproduction.