Update README.md

Hardeepcoder · web-flow · commit c240dcd7706a · 2018-11-24T09:58:54.000+05:30
diff --git a/README.md b/README.md
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 # UserManager---React-Native
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+<h2>Hello Friends, if you facing warning or error please send <a href="mailto:hardeepphp@yahoo.com">Email</a> me your error screenshot <a href="mailto:hardeepphp@yahoo.com">Here</a></h2>
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 Login and Signup system with Json in React native 
