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It seems to have been accidentally removed in #818

Author: ianhi

README.md

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 A JupyterLab extension for version control using Git
 
+![ui_glow_up](./docs/figs/preview.gif)
+
 To see the extension in action, open the example notebook included in the Binder [demo](https://mybinder.org/v2/gh/jupyterlab/jupyterlab-git/master?urlpath=lab/tree/examples/demo.ipynb).
 
 ## Requirements