Merge pull request #14 from mrc-ide/sangeetabhatia03-patch-1

Update README.md

README.md

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+** Please note that epireview is currently under active development. This means that data format, software interface, and features are evolving and are likely to change.
+The version used in our publication on Marburg virus disease ([preprint](https://doi.org/10.1101/2023.07.10.23292424)) is tagged as V0.1.0 and is available [here](https://github.com/mrc-ide/epireview/releases/tag/v0.1.0). You can use this version and accompanying data (with appropriate citation) but if you plan to make extensive use of epireview, please first get in touch with us (email s.bhatia@imperial.ac.uk). **
+
 epireview is a tool to obtain the latest data, figures and tables from the Pathogen Epidemiology Review Group (PERG). This package also contains functions to update pathogen-specific databases with new data from peer-reviewed papers as they become available. This can be submitted via a pull-request and will be checked by our team.
 
 To install the latest version of epireview, use: