Keys.h.erb in cocoapods-keys-2.0.0

- old
+ new

@@ -4,10 +4,14 @@
 // For more information see https://github.com/orta/cocoapods-keys
 //
 
 #import <Foundation/NSString.h>
 
+NS_ASSUME_NONNULL_BEGIN
+
 @interface <%= @name %> : NSObject
 <% @keys.each do |key, value| %>
-- (NSString *)<%= key %>;<% end %>
+@property (readonly) NSString *<%= key %>;<% end %>
 
 @end
+
+NS_ASSUME_NONNULL_END