Initial basic probably-inadequate DOS protection.

We disconnect any IP addresses that sends more than 50 requests in a
5-second window.
Merge pull request #10 from jeremybanks/disconnect-the-dangerous

 Disconnect IP addresses which are flooding requests/messages
update package.json.
move to #atp.
oops; got my package.json files mixed up.
it's amateur hour here; fix package.json.
making the bot work without a x-forwarded-for
re-adding the environment variable
Avoid exposing users' IP addresses.
Use JavaScript strict mode, and a few few-character tweaks.
Merge pull request #11 from kylecronin/no-proxy

making the bot work without a x-forwarded-for
Merge pull request #14 from jeremybanks/javastrict

Use JavaScript strict mode, and a few few-character tweaks.
Merge pull request #13 from jeremybanks/hide-ips

Avoid exposing users' IP addresses.
update README & contributors.
Merge branch 'master' of https://github.com/cliss/accidentalbot