Merge pull request vsouza#1646 from sgr-ksmt/add_alertift

Added Alertift in Alert & Action Sheet.

README.md

@@ -1723,6 +1723,7 @@ Most of these are paid services, some have free tiers.
 * [BPStatusBarAlert](https://github.com/ppth0608/BPStatusBarAlert) - A simple alerts that appear on the status bar and below navigation bar(like Facebook).🔶
 * [CFAlertViewController](https://github.com/Codigami/CFAlertViewController) -  A library that helps you display and customise alerts and action sheets on iPad and iPhone.🔶
 * [NotificationBanner](https://github.com/Daltron/NotificationBanner) - The easiest way to display highly customizable in app notification banners in iOS. 🔶
+* [Alertift](https://github.com/sgr-ksmt/Alertift) - Swifty, modern UIAlertController wrapper. :large_orange_diamond:
 
 #### Badge
 * [MIBadgeButton](https://github.com/mustafaibrahim989/MIBadgeButton-Swift) - Notification badge for UIButtons. :large_orange_diamond: