Finish writing AI (not tested) and evaluation function (tested).
Finished AI.
Add screenshot
Update README.md
Update README.md
Update README.md
Clean the directory
Clean the directory.

Delete Pods, etc.
Update README.md
Update README.md
Update README.md
Add time indicator to AI.
Merge remote-tracking branch 'origin/master'
Add AI settings.
Update README.md
Update README.md
Remove outdated screenshot
Remove Pods
Merge branch 'master' of https://github.com/DJBen/2048
Remove outdated screenshot and clean the directory