Update README.md

Signed-off-by: K Rain Leander <rainleander@users.noreply.github.com>

README.md

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+![](https://img.shields.io/badge/Stability-Maintained-green.svg)
 
 The [Packet](https://packet.com) cloud bare-metal machine driver for Docker.
 
+This repository is [Maintained](https://github.com/packethost/standards/blob/master/maintained-statement.md) meaning that this software is supported by Packet and its community - available to use in production environments.
+
 ## Usage
 
 You can provision bare-metal hosts once you have built and installed the docker-machine driver. The binary will be placed in your `$PATH` directory.