Bumped to 2.1.4a

Because of a Radar chart endless loop bug

Charts.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name = "Charts"
-  s.version = "2.1.4"
+  s.version = "2.1.4a"
   s.summary = "ios-charts is a powerful & easy to use chart library for iOS"
   s.homepage = "https://github.com/danielgindi/ios-charts"
   s.license = { :type => "Apache License, Version 2.0", :file => "LICENSE" }

README.md

@@ -1,11 +1,11 @@
-**Version 2.1.4**, synced to [MPAndroidChart #6ae1eef](https://github.com/PhilJay/MPAndroidChart/commit/6ae1eef)
+**Version 2.1.4**, synced to [MPAndroidChart #6ae1eef](https://github.com/PhilJay/MPAndroidChart/commit/497beac)
 
 ![alt tag](https://raw.github.com/danielgindi/ios-charts/master/Assets/feature_graphic.png)
 [![CodeHunt.io](https://img.shields.io/badge/vote-codehunt.io-02AFD1.svg)](http://codehunt.io/sub/ios-charts/?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)   
 
 * Xcode 7 / Swift 2.0
 * iOS 7.0 (Drag .swift files to your project)
-* iOS 8.0 (Use as an **Embedded** Framework)
+* iOS 8.0 / 9.0 (Use as an **Embedded** Framework)
 
 Okay so there's this beautiful library called [MPAndroidChart](https://github.com/PhilJay/MPAndroidChart) by [Philipp Jahoda](https://www.linkedin.com/in/philippjahoda) which has become very popular amongst Android developers, and in the meanwhile there's no decent charting solution for iOS.