title: React Native: RNGeocoder.reverseGeocodeLocation - Possible Unhandled Promise Rejection
body: <p>i tried to implement this react native component (<a href="https://github.com/devfd/react-native-geocoder" rel="nofollow">react-native-geocoder</a>) into my current app and get the following error:</p>
  
  <pre><code>[]([warn][tid:com.facebook.React.JavaScript] Possible Unhandled Promise 
  
  Rejection (id: 0):
  undefined is not an object (evaluating 'RNGeocoder.reverseGeocodeLocation')
  http://localhost:8081/index.ios.bundle?platform=ios&amp;dev=true:61745:11
  tryCallTwo@http://localhost:8081/index.ios.bundle?platform=ios&amp;dev=true:2626:3
  doResolve@http://localhost:8081/index.ios.bundle?platform=ios&amp;dev=true:2781:19
  Promise@http://localhost:8081/index.ios.bundle?platform=ios&amp;dev=true:2647:10
  reverseGeocodeLocation@http://localhost:8081/index.ios.bundle?platform=ios&amp;dev=true:61743:19
  http://localhost:8081/index.ios.bundle?platform=ios&amp;dev=true:15334:34
  requireImpl@http://localhost:8081/index.ios.bundle?platform=ios&amp;dev=true:76:17
  requireImpl@http://localhost:8081/index.ios.bundle?platform=ios&amp;dev=true:44:30
  _require@http://localhost:8081/index.ios.bundle?platform=ios&amp;dev=true:36:19
  global code@http://localhost:8081/index.ios.bundle?platform=ios&amp;dev=true:61774:9
  )
  </code></pre>
  
  <p>my code</p>
  
  <pre><code>var RNGeocoder = require('react-native-geocoder');
  
  // Reverse Geocoding
  var NY = {
    latitude: 40.7809261,
    longitude: -73.9637594
  };
  
  RNGeocoder.reverseGeocodeLocation(NY, (err, data) =&gt; {
    if (err) {
      return;
    }
  
    console.log(data);
  });
  </code></pre>
  
  <p>Is there any setting issue on my setup? I use the newest react native version.</p>