Fixed no loaded save error

In the event that a save file was deleted, the application would error out.
- Errors are caught and handled
- The application will indicate whether it was able to load a save with the status message as well as with the save details

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I am actually happy with the current product as opposed to before, this includes a few changes:
added the ability to edit more than just the credits
the selected backup and save will show coin and quota count real time
UI update, still ugly but I'm over it at this point

Technical changes:
improved the data evaluation method, allowing for the capability to evaluate much larger numbers, removing any theoretical limitations
Caught a couple more potential exceptions and covered them

Update README.md

Update README.md