Add README

commit 99a61dfc 
Author: Rucha Deshpande <deshruch@amazon.com> 
Date: Wed Dec 08 2021 09:55:26 GMT-0600 (Central Standard Time) 

    Merge branch 'dev' of codecommit://os-notification into dev


commit b3f9647e 
Author: Rucha Deshpande <deshruch@amazon.com> 
Date: Tue Dec 07 2021 17:03:12 GMT-0600 (Central Standard Time) 

    add README