Update README.md

README.md

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 ## NOTE:
-- If you are running RN < 0.30.0, you need to use react-native-fcm@1.0.15
-- If you are running RN < 0.33.0, you need to user react-native-fcm@1.1.0
-- Otherwise use latest v2 and use XCode 8 and latest Firebase SDK (iOS 3.6.0)
-- local notification is only available in V2
+- for latest RN, use v3
+- for RN < 0.40.0, use v2.5.6
+- for RN < 0.33.0, you need to user react-native-fcm@1.1.0
+- for RN < 0.30.0, you need to use react-native-fcm@1.0.15
+- local notification is not only available in V1
 
 - An example working project is available at: https://github.com/evollu/react-native-fcm/tree/master/Examples/simple-fcm-client