Added information for my XFX RMC-1 midi controller. - #44

Thanks for your pull request! However, there are a couple of issues preventing us from issuing you a PID:

• Your source code does not have any indication of being licensed under an open-source license. At a minimum, you need to check in a LICENSE file or similar to let users know how your code is licensed.
• The 'org' field in your pid file should specify just the name of your org (eg, 'xfx'), not the whole path.
• You appear to be using Arduino, which comes with its own PID. Can you clarify what you need a PID for?