Adding in AppbotX to Podfile
Displaying ratings prompt for notifications.

Having app rating prompt appear as the tableHeaderView in NotificationsViewController. Doesn't do anything yet.
Added AppbotX API Key to credentials file.
Added Appbot X initialization to app delegate.
Fleshed out app review prompt

Added in hook to allow user to actually open the app store to rate the app and also hooked in feedback controller built into the Appbot X library.
Adding AppRatingUtility

Adding AppRatingUtility to help with when to prompt for app reviews. Loosely based on Appirater.
Saving updates right away for AppRatingUtility.
Added conditions for display of ratings prompt

Tied the display of the ratings prompt to only display for users who haven't given rated/declined/given feedback for the current version and who have performed 5 actions against notifications.
Pointing AppbotX at Wordpress-Mobile

I pushed in updated fixes to adjust the button color and text.
Adjust app rating prompt to trigger after 5 views

Adjusted app rating prompt to trigger after five views of a notification's detail instead of 5 actions.
Adjusting provisioning profiles.
Adjusting animation.
Updating fonts of review prompt's buttons + label
Updating whitespace.
Updating text color in app review prompt
Some code cleanup
Adds missing newline
Merge pull request #2780 from wordpress-mobile/feature/integrate-app-review-prompt

Integrate app review prompt