diff --git a/README.md b/README.md
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+++ b/README.md
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+# ody
+
+This is a practice of implementing an interpreter using golang,
+following 'WRITING AN INTERPRETER IN GO'.
+https://interpreterbook.com/
+
+![](https://github.com/0daryo/ody/workflows/ci/badge.svg)
+
+## usage
+
+1. `go get -u github.com/0daryo/ody`
+2. make XX.od file in root dir
+3. run `ody exec XX.od`
diff --git a/main.go b/main.go
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+package main
+
+import "github.com/0daryo/ody/cmd"
+
+func main() {
+	cmd.Execute()
+}