Update Jest to 20.1.0-echo.1
Update Jest to 20.1.0-echo.1

Reviewed By: cpojer

Differential Revision: D5591819

fbshipit-source-id: 91830096988d88a6f0601d73225a12ae31e61a17

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