Inital version of !time command

Syntax: !time [area]

Uses the google geocoding api to turn an area specification into a
lat/long coordinate pair, which is then used to get a timezone record to
determine the local time.

Usecase: when working in international groups it's convenient to know if
your co-worker is likely to be awake or asleep.

bot/bot.lua

@@ -1,4 +1,5 @@
   http = require("socket.http")
+  https = require("ssl.https")
   URL = require("socket.url")
   json = (loadfile "./bot/JSON.lua")()
 --  lrexlib = require("rex_pcre")