Add remind command

scripts/remind.coffee

@@ -4,3 +4,21 @@
 # Commands:
 #   hubot remind 07:00 Good morning! - Send "Good morning!" at 7:00
 
+scheduler = require('node-schedule')
+
+module.exports = (robot) ->
+  robot.respond /remind (\d+):(\d+) (.*)/i, (msg) ->
+    remind robot, msg, msg.match[1], msg.match[2], msg.match[3]
+
+remind = (robot, msg, hour, minute, message) ->
+  try
+    currentDate = new Date()
+    currentYear = currentDate.getFullYear()
+    currentMonth = currentDate.getMonth()
+    currentDay = currentDate.getDay() - 1
+    scheduleDate = new Date(currentYear, currentMonth, currentDay, hour, minute)
+    new scheduler.scheduleJob scheduleDate, =>
+      msg.send message
+    msg.send "#{scheduleDate} \"#{message}\", accepted."
+  catch error
+    msg.send error