* Add ios to integration test and comments

* Add licenses

* Fix integration test for ios

* Delete pngs

* Undo changes to integration test

* Undo error

* Add ios task

* Fix task for landing

We now use a different approach for ios projects where the developer controls
the Xcode project file. This patch removes the old ".generated" approach in
favor of the new approach.

This example shows how to build a basic app using a custom Xcode project.
Future patches will bring the functionality up to par with hello_android.