README.md in stratumn_sdk-0.0.1 vs README.md in stratumn_sdk-0.1.0

@@ -1,8 +1,9 @@
 # Stratumn SDK for Ruby
 
 [![build status](https://travis-ci.org/stratumn/stratumn-sdk-ruby.svg?branch=master)](https://travis-ci.org/stratumn/stratumn-sdk-ruby.svg?branch=master)
+[![Gem Version](https://badge.fury.io/rb/stratumn_sdk.svg)](https://badge.fury.io/rb/stratumn_sdk)
 
 Interact with your Stratumn agent from your ruby application
 
 code  :: https://github.com/stratumn/stratumn-sdk-ruby
 
@@ -119,9 +120,12 @@
 
 ```ruby
 application = StratumnSdk::Application.load('quickstart')
 link = application.get_link('aee5427')
 new_link = link.addMessage('Hello, World!')
+
+# underscore version is also available
+new_link = link.add_message('Hello, World!')
 ```
 
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.