New Stats Class added

Created a PlayerStats class to keep the possible statistics for each player.

 What I did in Android Studios was clocked on the Git: <current branch> button we were working on earlier today. From there, click Development in Local Branches and click "Checkout as new branch" (In class, we were clicking Development in the Remote Branches and clicking "Checkout as new local branch". I'm not sure if that is what we want, so try it the new way). Anyway, type in the name of your new branch and then create your new feature. From there, click Git > Add, then Git > Commit Changes, type in commit message, and click Commit and Push or just commit if you are want to add more before pushing. Once you are pushing, it will say that your new branch is not being tracked. Click the box on the bottom that says "Push current branch to alternative branch" and keep the branch name the same. Once you do this, the branch will show up on GitHub. Then, you can make comments on your new change (which is what I'm doing now) and click "Create Pull Request". This will allow everyone to check your code and feature before we merge it back into the development branch.