Source: http://en.wikipedia.org/wiki/Conway%27s_Game_of_Life
Video version 1: https://www.youtube.com/watch?v=oEUq2ZS8Flg
Video version 2: https://www.youtube.com/watch?v=9cnfgXhXEdc
Patterns: http://www.conwaylife.com/wiki/Main_Page
WRITE_EXTERNAL_STORAGE - needed to save boards on external storage