README.md in method-tracer-1.1.1 vs README.md in method-tracer-1.1.2

@@ -1,5 +1,7 @@
+[![Build Status](https://travis-ci.org/iaintshine/ruby-method-tracer.svg?branch=master)](https://travis-ci.org/iaintshine/ruby-method-tracer)
+
 # Method::Tracer
 
 The gem provides OpenTracing instrumentation for custom Ruby methods.
 
 ## Installation
@@ -42,10 +44,10 @@
     include Method::Tracer
     trace_method :class_method
   end
 
   def instance_method
-    Method::Tracer.trace("inner span") do
+    Method::Tracer.trace("inner span") do |span|
       # business code
     end
   end
 
   include Method::Tracer