Update README.md

Author: nicolaschengdev

README.md

@@ -92,10 +92,19 @@ WYPopoverController uses ARC.
 
 ---
 
+iOS SDK 7.0 (with Xcode 5) is required.
+
 #### Cocoapods
 
 Add this line `pod 'WYPopoverController', '~> 0.1.3'` to your PodFile.
 
+Your PodFile should look like :
+
+```Ruby
+platform :ios, '7.0'
+pod 'WYPopoverController', '~> 0.1.3'
+```
+
 #### Manually
 
 Add these 4 files `WYPopoverController.h`, `WYPopoverController.m`, `WYStoryboardPopoverSegue.h`, `WYStoryboardPopoverSegue.m` and add `Quartzcore` framework to your project.