Update README.md

README.md

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 [![Maintainability](https://api.codeclimate.com/v1/badges/65f487b8807f7126b803/maintainability)](https://codeclimate.com/github/AndyObtiva/glimmer-dsl-xml/maintainability)
 [![Join the chat at https://gitter.im/AndyObtiva/glimmer](https://badges.gitter.im/AndyObtiva/glimmer.svg)](https://gitter.im/AndyObtiva/glimmer?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
-[Glimmer](https://github.com/AndyObtiva/glimmer) DSL for XML provides Ruby syntax for building XML (eXtensible Markup Language) documents.
+[Glimmer](https://github.com/AndyObtiva/glimmer) DSL for XML provides Ruby syntax for building XML (eXtensible Markup Language) and HTML documents.
 
 Within the context of desktop development, Glimmer DSL for XML is useful in providing XML data for the [SWT Browser widget](https://github.com/AndyObtiva/glimmer-dsl-swt/tree/master#browser-widget).