uninstaller.rbs in rbs-2.1.0

- old
+ new

@@ -1,3 +1,10 @@
+# <!-- rdoc-file=lib/rubygems/uninstaller.rb -->
+# An Uninstaller.
+#
+# The uninstaller fires pre and post uninstall hooks.  Hooks can be added either
+# through a rubygems_plugin.rb file in an installed gem or via a
+# rubygems/defaults/#{RUBY_ENGINE}.rb or rubygems/defaults/operating_system.rb
+# file.  See Gem.pre_uninstall and Gem.post_uninstall for details.
+#
 class Gem::Uninstaller
-  # TODO: Add sinatures...
 end