Merge pull request #4971 from stepanovgena/master

Adding a tutorial link to README.md

README.md

@@ -59,6 +59,7 @@ In order to correctly compile:
 * [Plotting in IOS using Charts framework with SwiftUI (Evgeny Basisty)](https://medium.com/@zzzzbh/plotting-in-ios-using-charts-framework-with-swiftui-222034a2bea6)
 *   [Set Up a Basic Bar Chart Using iOS-Charts (Penny Huang)](https://medium.com/@penny-huang/swift-setting-up-a-basic-bar-chart-using-ios-charts-afd6aad96ac)
 *  [iOS-Charts Tutorial: Highlight Selected Value With a Custom Marker (Penny Huang)](https://medium.com/@penny-huang/swift-ios-charts-tutorial-highlight-selected-value-with-a-custom-marker-30ccbf92aa1b)
+* [Drawing Charts in iOS Before SwiftUI (Gennady Stepanov)](https://medium.com/better-programming/drawing-charts-in-ios-before-swiftui-9f95b8612607)
 
 Want your tutorial to show here? Create a PR!