Update README.md (#808)

Changed minimum target version in podfile example to 12.0

README.md

@@ -55,7 +55,7 @@ To integrate SnapKit into your Xcode project using CocoaPods, specify it in your
 
 ```ruby
 source 'https://github.com/CocoaPods/Specs.git'
-platform :ios, '10.0'
+platform :ios, '12.0'
 use_frameworks!
 
 target '<Your Target Name>' do