Bump Cocoapods 4.0.0

Author: Ethella

MagicSDK.podspec

@@ -3,7 +3,7 @@
 #
 Pod::Spec.new do |s|
   s.name             = 'MagicSDK'
-  s.version          = '3.2.0'
+  s.version          = '4.0.0'
   s.summary          = 'Magic IOS SDK'
 
   s.description      = <<-DESC

README.md

@@ -20,8 +20,8 @@ This will make pod file install local dependencies instead of the ones distribut
 
 ```ruby 
 # Distributed Library on Cocoapods
-# pod 'MagicSDK', '~> 3.0'
-# pod 'MagicExt-OAuth', '~> 0.8'
+# pod 'MagicSDK', '~> 4.0'
+# pod 'MagicExt-OAuth', '~> 1.0'
 
 #   Local development library
 pod 'MagicSDK', :path => '../magic-ios/MagicSDK.podspec'