diff --git a/.gitignore b/.gitignore
index c2658d7..204ade5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 node_modules/
+bin/
diff --git a/.npmignore b/.npmignore
new file mode 100644
index 0000000..9781602
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1,2 @@
+src/
+build.sh
diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..bfad41d
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,4 @@
+mkdir -p bin
+echo '#!/usr/bin/env node' > bin/pert
+coffee -b -c --no-header -p src/pert.coffee >> bin/pert
+chmod +x bin/pert
diff --git a/package.json b/package.json
index 2f1431e..1f3c760 100644
--- a/package.json
+++ b/package.json
@@ -3,8 +3,12 @@
   "version": "0.0.1",
   "description": "pert diagram calculator",
   "main": "pert.coffee",
+  "bin": {
+    "pert": "./bin/pert"
+   },
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "prepublish": "./build.sh",
+    "build": "./build.sh"
   },
   "repository": {
     "type": "git",
@@ -17,6 +21,10 @@
   },
   "homepage": "https://github.com/fazo96/pert",
   "dependencies": {
-    "chalk": "^1.0.0"
+    "chalk": "^1.0.0",
+    "commander": "^2.6.0"
+  },
+  "devDependencies": {
+    "coffee-script": "^1.9.1"
   }
 }
diff --git a/pert.coffee b/src/pert.coffee
similarity index 100%
rename from pert.coffee
rename to src/pert.coffee