Summary: Unexpected semicolon in refWatcher sample code copy pasting the sample code for refWatcher giving below error due to a semicolon in refWatcher code  ## Changelog remove the semicolon from refWatcher sample code Pull Request resolved: https://github.com/facebook/flipper/pull/519 Reviewed By: danielbuechele Differential Revision: D17527312 Pulled By: passy fbshipit-source-id: c573736dec63de2e93113b56c24a7bab72bb0067