docs: mention installation from this fork

Amolith created

Change summary

README.md | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)

Detailed changes

README.md 🔗

@@ -1,3 +1,24 @@
+**NOTE:** This is a Crush fork where I'm experimenting with prompts and other
+things. I've also ripped out the CLA. Everything below the `Crush` heading is
+from the original README. To install my fork, run…
+
+```sh
+go install git.secluded.site/crush@dev
+```
+
+I pull upstream changes into the `upstream` branch here, break my branches off
+that, then merge my changes into my `dev` branch, which gets rebased on
+`upstream` fairly often. `dev` history will get rewritten frequently, so `go
+install ... @dev` might not actually fetch the latest changes through the Go
+module proxy. I'll try to make sure what the proxy has always compiles though.
+
+Contributions are welcome, no need for a CLA. I'll try to keep up with
+maintaining anything I accept.
+
+Upstream is at: https://github.com/charmbracelet/crush
+
+---
+
 # Crush
 
 <p align="center">