Add installl instruction

README.md

@@ -6,7 +6,13 @@ Built primarily for fixing https://github.com/phusion/passenger/issues/2521 temp
 
 ## Install
 
-Download from releases or build it and place it to `~/.local/bin/bunfix`
+Download from releases or build it and place it to `~/.local/bin/proxfix`.
+
+```bash
+PROXYFIX=proxy-fix-linux-$( [ "$(uname -m)" = "aarch64" ] && echo "arm64" || echo "amd64" )
+wget https://github.com/domcloud/proxy-fix/releases/download/v0.2.3/$PROXYFIX.tar.gz
+tar -xf $PROXYFIX.tar.gz && mv $PROXYFIX /usr/local/bin/proxfix && rm -rf $PROXYFIX*
+```
 
 ## Usage