Added Bitcoin price lookup :)

Author: fredwu

src/scripts/bitcoin.coffee

@@ -0,0 +1,50 @@
+# Description:
+#   Find the latest Bitcoin price in specified currency
+#
+# Dependencies:
+#   "cheerio": ""
+#
+# Configuration:
+#   None
+#
+# Commands:
+#   hubot bitcoin price (in) <currency>
+#
+# Author:
+#   Fred Wu
+
+cheerio = require('cheerio')
+
+module.exports = (robot) ->
+  robot.respond /bitcoin price\s(in\s)?(.*)/i, (msg) ->
+    currency = msg.match[2].trim().toUpperCase()
+    bitcoinPrice(msg, currency)
+
+bitcoinPrice = (msg, currency) ->
+  msg
+    .send "Looking up... sit tight..."
+  msg
+    .http("http://bitcoinprices.com/")
+    .get() (err, res, body) ->
+      msg.send "#{getPrice(currency, body)}"
+
+getPrice = (currency, body) ->
+  $ = cheerio.load(body)
+
+  lastPrice   = null
+  highPrice   = null
+  lowPrice    = null
+  priceSymbol = null
+
+  $('table.currencies td.symbol').each (i) ->
+    if $(this).text() == currency
+      priceSymbol = $(this).next().next().next().next().next().next().text()
+      lastPrice = "#{priceSymbol}#{$(this).next().next().next().next().next().text()}"
+      highPrice = "#{priceSymbol}#{$(this).next().next().next().text()}"
+      lowPrice  = "#{priceSymbol}#{$(this).next().next().next().next().text()}"
+      false
+
+  if lastPrice == null
+    "Can't find the price for #{currency}. :("
+  else
+    "#{currency}: #{lastPrice} (H: #{highPrice} | L: #{lowPrice})"