Merge branch 'master' into groupme

src/hubot/scripts/math.coffee

@@ -0,0 +1,16 @@
+# Allows Hubot to do mathematics.
+#
+# math me <expression> - Calculate the given expression.
+# convert me <expression> to <units> - Convert expression to given units.
+module.exports = (robot) ->
+  robot.respond /(calc|calculate|convert|math)( me)? (.*)/i, (msg) ->
+    msg
+      .http('http://www.google.com/ig/calculator')
+      .query(hl: 'en', q: msg.match[3])
+      .headers
+        'Accept-Language' : 'en-us,en;q=0.5',
+        'Accept-Charset'  : 'utf-8',
+        'User-Agent' : "Mozilla/5.0 (X11; Linux x86_64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1"
+      .get() (err, res, body) ->
+        json = eval("(#{body})") # non-string json keys
+        msg.send json.rhs