Move radical meaning on reverse to bottom of card

[archenemies]

I've really enjoyed using the example decks in this repo.

I wanted to suggest moving the radical meaning on the reverse side of the card to the bottom, so that it is naturally covered by the thumb when the user does not want a "hint" as to the shape of the kanji.

I have other suggestions if the author is interested, for example I think it would be helpful to have a little more information about the example decks in the README. At first I didn't realize that the level numbers go down instead of up, so that I should start at level 10 and not 1...