rami-a bff3fcf7f1

[Buttons] [MaskedTransition] Apply safe area to floating button example and masked transition example (#5389) ...

This change applies the safe area to the examples for Floating Button and Masked Transition so that they appear correct on notched displays in landscape.

Closes #3702 
Closes #3714 

Floating Buttons Before:
![simulator screen shot - iphone x - 2018-10-10 at 12 53 13](https://user-images.githubusercontent.com/2364772/46752602-a4128e00-cc8b-11e8-8d58-32255db304af.png)

Floating Buttons After:
![simulator screen shot - iphone x - 2018-10-10 at 12 52 33](https://user-images.githubusercontent.com/2364772/46752584-9a892600-cc8b-11e8-9f8f-fafbc67e2a8b.png)

Masked Transition Before:
![simulator screen shot - iphone x - 2018-10-10 at 12 53 23](https://user-images.githubusercontent.com/2364772/46752610-a8d74200-cc8b-11e8-8ed9-ba010d279d9a.png)


Masked Transition After:
![simulator screen shot - iphone x - 2018-10-10 at 12 52 28](https://user-images.githubusercontent.com/2364772/46752564-91985480-cc8b-11e8-82e6-1458de23c38a.png)

Additionally, I noticed in the Masked Transition example that the left/right fabs were swapped in their position so I fixed this. I also applied the safe area to the fullscreen transition example.

2018-10-10 16:48:34 -04:00

..

MaskedTransitionTypicalUse.swift

[Buttons] [MaskedTransition] Apply safe area to floating button example and masked transition example (#5389)

2018-10-10 16:48:34 -04:00