iOS opening Local Notification crash fix

This reverts commit 9a47c853.

Fix setting of the `openedLocalNotification` to use the `userInfo` from the `UILocalNotification` if it exists instead of the `UILocalNotification` itself

Break README into sub-sections in separate files with a ToC

Remove @providesModule

Remove createJSModules @overide marker - RN 0.47 compatibility

Accept string device tokens

This Haste module is never used by the library, and only interferes with usage in Haste-based systems.

Add silent option to iOS localNotification

Add an option to suppress notification sound. Allows for in-app
notification mute

Added support for checking permissions on android

Use UserNotifications to create/dismiss local notifications

a15e038a adds support for enumerating/dismissing delivered notifications
by ID, but UserNotifications notifications and UILocalNotification
notifications have a different set of IDs (a notification created using
UILocalNotification will have an ID that does not match the
notification's ID in the UserNotifications world and hence cannot be
used to dismiss that notification). This commit creates the
notifications using UserNotifications if the user is on iOS 10.

Add iOS checkPermissions

Add a checkPermissions function allowing the app to determine what
notification permissions the user has granted. The function returns a
promise resolving to an object with permission info.

Missing bracket on example

Update README.md

Fix flow errors

iOS API - Is registered for remote notifications