readme.md in appium_lib-0.19.1 vs readme.md in appium_lib-0.21.0

@@ -47,9 +47,12 @@
         app_wait_activity: '.act.Start'
       }
 Appium::Driver.new(apk).start_driver
 
 # Define the methods on all objects.
+# Note that this can also be scoped to limit the potential for conflicts.
+# Example: Appium.promote_appium_methods ::Minitest::Spec
+# Another alternative is to not promote at all. Instead access methods via $driver
 Appium.promote_appium_methods Object
 ```
 
 ```ruby
 # Example of automating Settings preinstalled app on Android