A Simple PostBoard module for WPISuite

So I made this simple module as a demo. It's fully functional. All it is is a way to post message for everyone to see. It stores messages in the core for later retrieval.

I'm not sure if we want to merge this into our main repository, but we can. Either way take a look. I'm in the process of documenting the process I went through to implement this.

Screen shots:

![image](https://f.cloud.github.com/assets/2282012/96585/8d729160-66be-11e2-9745-0855c6b4718f.png)

![image](https://f.cloud.github.com/assets/2282012/96589/af22f8c2-66be-11e2-8c89-e83e2f786cf0.png)