diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..ac6f0ad
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,44 @@
+project_name = astexplorer-refmt
+
+DUNE = opam exec -- dune
+opam_file = $(project_name).opam
+
+.PHONY: help
+help:
+ @echo "";
+ @echo "List of available make commands";
+ @echo "";
+ @grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf " \033[36m%-15s\033[0m %s\n", $$1, $$2}';
+ @echo "";
+
+.PHONY: build-dev
+dev:
+ $(DUNE) build -w @all
+
+.PHONY: clean
+clean: ## Clean artifacts
+ $(DUNE) clean
+
+.PHONY: exec
+exec: ## Run the project
+ $(DUNE) exec $(demo)
+
+.PHONY: format
+format:
+ DUNE_CONFIG__GLOBAL_LOCK=disabled $(DUNE) build @fmt --auto-promote
+
+.PHONY: format-check
+format-check:
+ $(DUNE) build @fmt
+
+.PHONY: create-switch
+create-switch: ## Create opam switch
+ opam switch create . 5.1.1 --deps-only --with-dev-setup -y
+
+.PHONY: install
+install:
+ $(DUNE) build @install
+ opam install . --deps-only --with-test
+
+.PHONY: init
+init: create-switch install
\ No newline at end of file
diff --git a/src/example/example.js b/src/example/example.js
new file mode 100644
index 0000000..cd26ffa
--- /dev/null
+++ b/src/example/example.js
@@ -0,0 +1,4 @@
+let code = "let x = 1";
+
+let ast = window.parseReason(code);
+window.document.querySelector("#app").innerHTML = ast;
diff --git a/src/index.html b/src/example/index.html
similarity index 69%
rename from src/index.html
rename to src/example/index.html
index eb214fb..d0da71f 100644
--- a/src/index.html
+++ b/src/example/index.html
@@ -7,10 +7,14 @@
-
+
+