title: React Native Watchman error In window 10
body: <p>From here i download as per given steps 
  <a href="https://facebook.github.io/watchman/docs/install.html" rel="nofollow noreferrer">https://facebook.github.io/watchman/docs/install.html</a>
  After Installation of watchmen i get this issue.
  'watchman' is not recognized as an internal or external command.enter image description hereI follow all the steps given in below link.
  <a href="https://facebook.github.io/react-native/docs/getting-started" rel="nofollow noreferrer">https://facebook.github.io/react-native/docs/getting-started</a>
  <a href="https://i.stack.imgur.com/mL3Qp.png" rel="nofollow noreferrer">enter image description here</a></p>