Update mappings to handle lowercase react properly (#3133)
Update mappings to handle lowercase react properly (#3133)

Summary:
This should fix the build.

Pull Request resolved: https://github.com/facebook/draft-js/pull/3133

Reviewed By: thegreatercurve

Differential Revision: D35600867

Pulled By: zpao

fbshipit-source-id: 79284a9db7873da8d9741614342ec229de63e268

facebook/draft-js