title: SWIFT_VERSION '5.0' is unsupported, supported versions are: 3.0, 4.0, 4.2. (in target 'SwiftyJSON')
body: <p>I am getting this error while trying to install <a href="https://github.com/wuxudong/react-native-charts-wrapper" rel="noreferrer">react-native-charts-wrapper</a>. I have followed the steps <a href="https://github.com/wuxudong/react-native-charts-wrapper/blob/master/installation_guide/README.md" rel="noreferrer">exactly as they say</a> but still not able to build the project successfully.</p>
  
  <p>I also set the SWIFT_VERSION to 4.2 in build settings of my project, still getting the same error.</p>
  
  <p>My XCODE version: Version 10.1 (10B61)</p>
  
  <p>Any ideas?</p>