Huge changes - see inside

Main new feature: Multiple bots

Each bot is defined in the config file:

bots:
  - <CONFIG FOR A BOT>
  - <CONFIG FOR A BOT>

(see config-example.yml)
Remove old logs folder
Update config-example.yaml
Removed mafia directory

It was an artifact of the old way of saving triggers
Move the password for autoban into the config.

This involved making another trigger field: 'init'

use it like this:

t.init {
  what to do when trigger is initialized
}

Right now it has use because in the main body of the Trigger.new block, t[:ch] is not
initialized. In the init block, it's guaranteed that t[:ch] will be set.
deleted useless file
Delete pw
Merge branch 'multibot-dev' of https://github.com/pickdenis/ps-chatbot into multibot-dev
Add config info to README
Remove useles file
Clean out some more useless files
Add info to readme to reflect changes
Before 'eval'ing the trigger, set a local var...

called `ch`. This is so the trigger can easily access it.
Stupid pw file kept coming back, figured it out
Add log files to gitignore
Move the markov chain-storing file

From the trigger folder to the bot folder. This encourages the idea of 'separate bots'
Move FCGetter to its own file
Merge remote-tracking branch 'origin/master' into multibot-dev
Banlist fix
Avatar option