Added separator control and renderer for iOS
Added Separator renderer for Android
Fixed crash on Android when updating requested size on non-separator-related properties
Updated UISeparator to do symmetrical dots
Update to beta10
Merge branch 'master' of https://github.com/XForms/Xamarin-Forms-Labs.git
Merged in the Separator controls
Merge pull request #301 from Applifting/master

Added Separator control for Android and iOS
Update beta91 close #293
Backpress handling updated

Made the delegate func async. Added override for OnBackPressed Android
Activity. Will update the sample with an example usage page a bit later.
Added Separator renderer for WP8

No orientation support yet. Renders the sample page.
Update README.md