Update PublishedObject.podspec

Author: Amzd

PublishedObject.podspec

@@ -1,6 +1,7 @@
 Pod::Spec.new do |s|
   s.name             = 'PublishedObject'
   s.version          = '0.1.4'
+  s.license          = { type: 'MIT' }
   s.summary          = "A property wrapper that forwards the objectWillChange of the wrapped ObservableObject to the enclosing ObservableObject\'s objectWillChange."
   s.homepage         = 'https://github.com/Amzd/PublishedObject'
   s.author           = { 'Casper Zandbergen' => 'info@casperzandbergen.nl' }