Change bot initialize params to hash.
Add group concept to bot.
Set display color based on bot group.
Fix SpaceOutReactionPolicy tests.
Add attraction reaction policy.
Add BirdsOfAFeatherReactionPolicy.
Fix typo.
Add sublime workspace files to gitignore.
Change init params for BirdsOfAFeatherReactionPolicy to a hash.
Wire up BirdsOfAFeatherReactionPolicy to driver.
Implement group-attracting reaction policy.