Update README.md (#73)
Update README.md (#73)

* Update README.md

Fix broken image url.

* Update README.md

Update README to include info about how OpenLocate works on iOS

* Update README.md

Add location permission opt-in best practices. Add notice about app submission.

* moved "how openlocate works" section up

OpenLocate/openlocate-ios,OpenLocate/openlocate-ios