Merge pull request #7 from ineverov/improve_find_ant_logic

Improve find ant logic
Attr acessor for ants in colony
Merge branch 'master' of git.cashnetusa.com:ineverov/AntHillCore into attr_accessor_for_ants
Merge branch 'master' of git.cashnetusa.com:gems/AntHillCore into attr_accessor_for_ants
Add some documentation