How can I promote Bitcoin in My new iPhone app?

[refaelsh]

Hello everyone,
I am currently developing (almost finished) My second iPhone app.
In the about screen, I want to add something in the likes: "Bitcoin donations are accepted here".
Here is a screenshot of what I got so far:

https://plus.google.com/photos/109879817692684564524/albums/5862135873042346049/5879685287158557410?banner=pwa&authkey=COOKyMD244nNAg&pid=5879685287158557410&oid=109879817692684564524

Any suggestions how can I use this opportunity to promote Bitcoin?

[refaelsh]

I've finished the app.
It can be found here: appstore.com/mocoder