README.md in opentelemetry-sdk-0.5.1 vs README.md in opentelemetry-sdk-0.6.0

@@ -39,10 +39,10 @@
 # create a span
 tracer.in_span('foo') do |span|
   # set an attribute
   span.set_attribute('platform', 'osx')
   # add an event
-  span.add_event(name: 'event in bar')
+  span.add_event('event in bar')
   # create bar as child of foo
   tracer.in_span('bar') do |child_span|
     # inspect the span
     pp child_span
   end