Raul

I have implemented the read/unread message methods and made some further refactoring on the way.

As you can see from the commits, I have created a packaging structure of the form com.reddit.dev.api.jreddit.
I thought this might come in useful  as we are working on reddit.com/dev/api and the project is jReddit. I also consider that a more generic packaging structure could come in useful, that is, if you want to replace the im.goel.jreddit one.

If you agree on changing the packaging we can find an alternative name (if the proposed one is too long or unfit) and move everything under it. Also, I was thinking of talking to the Reddit Dev team to post the API Wrapper on their page under Java (https://github.com/reddit/reddit/wiki/API-Wrappers). I consider that having a more general packaging structure will be a step forward in that direction.