title: Manually calling a React.PropTypes validation React native "^0.30.0"
body: <p>I have upgraded to the latest version of React/RN:
      "react": "^15.2.1",
      "react-native": "^0.30.0",</p>
  
  <p>And I am starting to get a lot of warnings regarding the stylesheets. I am actually not using React.PropTypes validation for the style sheets, so why is throwing these warnings?</p>
  
  <pre><code>const styles = StyleSheet.create({
      welcome: {
          fontSize: 20,
          textAlign: "center",
          margin: 10,
      },
  </code></pre>
  
  <blockquote>
    <p>ExceptionsManager.js:76 Warning: You are manually calling a
    React.PropTypes validation function for the <code>fontSize</code> prop on
    <code>StyleSheet welcome</code>. This is deprecated and will not work in the next
    major version. You may be seeing this warning due to a third-party
    PropTypes library. See <a href="https://facebook.github.io/react/warnings/dont-call-proptypes.html">https://facebook.github.io/react/warnings/dont-call-proptypes.html</a>
    for details.reactConsoleError @ </p>
    
    <p>ExceptionsManager.js:76 Warning: You are manually calling a
    React.PropTypes validation function for the <code>textAlign</code> prop on
    <code>StyleSheet welcome</code>. This is deprecated and will not work in the next
    major version. You may be seeing this warning due to a third-party
    PropTypes library. See <a href="https://facebook.github.io/react/warnings/dont-call-proptypes.html">https://facebook.github.io/react/warnings/dont-call-proptypes.html</a></p>
    
    <p>ExceptionsManager.js:76 Warning: You are manually calling a
    React.PropTypes validation function for the <code>margin</code> prop on
    <code>StyleSheet welcome</code>. This is deprecated and will not work in the next
    major version. You may be seeing this warning due to a third-party
    PropTypes library. See <a href="https://facebook.github.io/react/warnings/dont-call-proptypes.html">https://facebook.github.io/react/warnings/dont-call-proptypes.html</a>
    for details.</p>
  </blockquote>