README.md in umlaut-4.0.0.beta1 vs README.md in umlaut-4.0.0.beta2

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 [![Dependency Status](https://gemnasium.com/team-umlaut/umlaut.png)](https://gemnasium.com/team-umlaut/umlaut)
 [![Code Climate](https://codeclimate.com/github/team-umlaut/umlaut.png)](https://codeclimate.com/github/team-umlaut/umlaut)
 [![Coverage Status](https://coveralls.io/repos/team-umlaut/umlaut/badge.png?branch=master)](https://coveralls.io/r/team-umlaut/umlaut)
 <!--[![Security Status](http://rails-brakeman.com/team-umlaut/umlaut.png)](http://rails-brakeman.com/team-umlaut/umlaut)-->
 
+(Umlaut 4.0.0.beta1 is out, and this README refers to Umlaut 4.x, and we recommend starting with Umlaut 4.x even though it's only in beta. Install with `gem install umlaut --pre`)
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 Umlaut is software for libraries (the kind with books). 
 
 It could be described as a front-end layer on top of an existing OpenURL 
 knowledge base. But it's actually quite a bit more than that. 
 