Merge pull request #1516 from ksss/tag-name-nil

Add doc for Tag#name if no tag name is supplied

Author: lsegal

lib/yard/tags/tag.rb

@@ -23,6 +23,7 @@ class Tag
       attr_accessor :types
 
       # @return [String] a name associated with the tag
+      # @return [nil] if no tag name is supplied
       attr_accessor :name
 
       # @return [CodeObjects::Base] the associated object