Added the credit as a main feature. Now that I think of it, it is a feature rather than just a credit. OpenStreetMap is indeed better than many commercial mappi

Added the credit as a main feature. Now that I think of it, it is a feature rather than just a credit. OpenStreetMap is indeed better than many commercial mapping data sources for some of the cities. The app has the credit as an overlay in the map screen so it's very hard to miss. I'd missed it on the website. Thanks for pointing out.