README change

Author: jurajmatus

README.md

@@ -136,6 +136,8 @@ custom:
         - echo hello > test
     rawFileExtensions:              # An array of file extensions to import using the Webpack raw-loader.
       - csv                         # Defaults to ['pem', 'txt']
+    minifyOptions:                  # Options for ESBuildMinifyPlugin (https://esbuild.github.io/api/#simple-options)
+      - keepNames: true             # Disable symbol name mangling during minification
     experiments:                    # Give the ability to activate and try out experimental features of Webpack
 
 ```