Add autojoin key to servers
Bring this closer to a real bot

Use the configuration values to actually configure the bot.
Read from stdin and handle things like /msg, /raw, etc.
Intercept the first ^C and treat it as QUIT.
Exit when the connection shuts down

Some task is keeping us alive after we've fallen off the end of main().
It's probably either the stdin task or the signal task. To that end,
we need to use libc::exit() to terminate.
Trim newlines off of the stdin lines