Changed React to React Native in README.md
Changed React to React Native in README.md

Summary:
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Referencing #16142
Closes https://github.com/facebook/react-native/pull/16146

Differential Revision: D5950544

Pulled By: TheSavior

fbshipit-source-id: 6a679ed2ca1fdb91a4240f02e68bbef858b5b645

arthuralee/react-native,hoangpham95/react-native,facebook/react-native,cdlewis/react-native,hammerandchisel/react-native,pandiaraj44/react-native,hoastoolshop/react-native,hammerandchisel/react-native,hoastoolshop/react-native,janicduplessis/react-native,exponentjs/react-native,rickbeerendonk/react-native,dikaiosune/react-native,hoangpham95/react-native,hoastoolshop/react-native,hoangpham95/react-native,frantic/react-native,exponent/react-native,cdlewis/react-native,rickbeerendonk/react-native,ptmt/react-native-macos,Bhullnatik/react-native,hoastoolshop/react-native,janicduplessis/react-native,rickbeerendonk/react-native,jevakallio/react-native,frantic/react-native,cdlewis/react-native,dikaiosune/react-native,arthuralee/react-native,hammerandchisel/react-native,myntra/react-native,Bhullnatik/react-native,hammerandchisel/react-native,hoastoolshop/react-native,dikaiosune/react-native,myntra/react-native,javache/react-native,myntra/react-native,cdlewis/react-native,pandiaraj44/react-native,jevakallio/react-native,javache/react-native,rickbeerendonk/react-native,pandiaraj44/react-native,rickbeerendonk/react-native,ptmt/react-native-macos,exponent/react-native,exponentjs/react-native,javache/react-native,ptmt/react-native-macos,exponentjs/react-native,javache/react-native,kesha-antonov/react-native,exponent/react-native,exponentjs/react-native,hoastoolshop/react-native,frantic/react-native,rickbeerendonk/react-native,kesha-antonov/react-native,pandiaraj44/react-native,kesha-antonov/react-native,kesha-antonov/react-native,cdlewis/react-native,ptmt/react-native-macos,rickbeerendonk/react-native,Bhullnatik/react-native,myntra/react-native,hammerandchisel/react-native,facebook/react-native,facebook/react-native,facebook/react-native,janicduplessis/react-native,Bhullnatik/react-native,janicduplessis/react-native,kesha-antonov/react-native,exponent/react-native,ptmt/react-native-macos,jevakallio/react-native,javache/react-native,dikaiosune/react-native,myntra/react-native,facebook/react-native,janicduplessis/react-native,hoangpham95/react-native,dikaiosune/react-native,myntra/react-native,pandiaraj44/react-native,rickbeerendonk/react-native,cdlewis/react-native,hoastoolshop/react-native,cdlewis/react-native,dikaiosune/react-native,frantic/react-native,dikaiosune/react-native,Bhullnatik/react-native,myntra/react-native,jevakallio/react-native,rickbeerendonk/react-native,janicduplessis/react-native,ptmt/react-native-macos,jevakallio/react-native,exponent/react-native,ptmt/react-native-macos,hoangpham95/react-native,pandiaraj44/react-native,exponent/react-native,myntra/react-native,janicduplessis/react-native,javache/react-native,exponent/react-native,kesha-antonov/react-native,arthuralee/react-native,hoastoolshop/react-native,facebook/react-native,kesha-antonov/react-native,hoangpham95/react-native,jevakallio/react-native,exponentjs/react-native,javache/react-native,hoangpham95/react-native,hammerandchisel/react-native,javache/react-native,frantic/react-native,javache/react-native,pandiaraj44/react-native,Bhullnatik/react-native,Bhullnatik/react-native,kesha-antonov/react-native,ptmt/react-native-macos,exponentjs/react-native,jevakallio/react-native,janicduplessis/react-native,hammerandchisel/react-native,facebook/react-native,facebook/react-native,facebook/react-native,pandiaraj44/react-native,hammerandchisel/react-native,hoangpham95/react-native,Bhullnatik/react-native,exponent/react-native,jevakallio/react-native,arthuralee/react-native,dikaiosune/react-native,cdlewis/react-native,kesha-antonov/react-native,exponentjs/react-native,arthuralee/react-native,myntra/react-native,exponentjs/react-native,cdlewis/react-native,jevakallio/react-native