Add game of life kata. Correctly handles an empty grid
Added single cell case
Add two neighbouring cells case
Add cell class
Moved cell tests into separate file
Refactoring cell tests
Implemented dead cell stays dead for zero and one neighbour
Implemented all cell tests
Refactoring cell and cell tests
Add tests for more than four neighbours
Add grid class to manage cells
Now adds cell directly above as a neighbour in the grid
Add ability to add a neighbour to the cell class
Cell#add_neighbours won't add duplicates
Grid now adds neighbours to each cell.