add install options to readme

README.md

@@ -2,9 +2,25 @@
 
 Sigil is a minimal symlink-based dotfile manager with per-package Lua config.
 
-## Install (dev)
+## Install
 
+### Build and install to ~/.local/bin
+```bash
+cd ~/programming/sigil
+go build -o ~/.local/bin/sigil .
 ```
+
+### Install via go install
+```bash
+cd ~/programming/sigil
+go install .
+# Binary will be at $(go env GOPATH)/bin/sigil
+# Make sure $(go env GOPATH)/bin is in your PATH
+```
+
+### Run without installing (dev)
+```bash
+cd ~/programming/sigil
 go run . <command>
 ```