Translate now allows capitals/punctuation.

Will you add a "decode" method that takes a string of emojis and returns the plaintext message?  (So, e.g., you and I could be talking to each other in code and using the emoji bot to decode our messages, thus protecting us from a [man-in-the-middle attack](http://en.wikipedia.org/wiki/Man-in-the-middle_attack), although of course if the bot is compromised we're screwed.)