Update README.md

Author: jvorcak

README.md

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+MIT-licensed console emulator in React. Documentation and more advanced features coming soon!
+
 # react-console
 
 > React component that emulates console behaviour
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 npm install --save @webscopeio/react-console
 ```
 
+## Demo
+
+https://webscopeio.github.io/react-console/
+
 ## Screenshot
 
 ![Webscope React Console](https://user-images.githubusercontent.com/1083817/48961581-14dce380-ef76-11e8-9d89-66c3815e46fe.png)