Update README.md

README.md

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 # mosh-static
-[WIP] Static builds of mosh
+
+An unofficial static binary distribution of [mobile-shell/mosh](https://github.com/mobile-shell/mosh) which can be dropped into a remote server.
+
+Releasing is automated by GitHub Actions — [this GitHub Actions workflow](https://github.com/dtinth/mosh-static/blob/main/.github/workflows/autobuild.yml) clones `mosh`’s source code, compiles it inside an Alpine Docker image, and creates [a GitHub release with the binary](https://github.com/dtinth/mosh-static/releases/latest).
+
+> **Note:** Only x86-64 architecture is supported. I do not plan to support other architectures or maintain this repository. Please feel free to fork. If there is an actively maintained fork, please let me know and I will point people there. 
+
+## Using the binaries
+
+```sh
+# On the server
+wget https://github.com/dtinth/mosh-static/releases/latest/download/mosh-server
+chmod +x mosh-server
+
+# On the client
+mosh --server=./mosh-server <username>@<hostname>
+```
+