pianod 165 (new formula)

Added formula for [pianod](http://deviousfish.com/pianod/), version 165, a Pandora music server:

> `pianod` is an open-source Pandora client with line-oriented and Websocket TCP/IP control interfaces. A simple protocol makes for easy clients, mix scripting, integration with a home automation system, or use as multiple-user music system. `pianod` has a full-featured web-based interface that allows multiple listeners to view status and share control.
I know, but I have limited experience with ruby, and `pianod` is a pretty simple binary. I can add a commit later, but if something were to fail, the version check would probably fail in this case.