diff --git a/.gitignore b/.gitignore
index b9969b15..a3e69d17 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,6 @@
-/dist/
-/local-roms/
-jsnes.tmproj
 ._*
 .DS_Store
-/tmp
+/dist
+/local-roms
 /node_modules
+/tmp
diff --git a/.npmignore b/.npmignore
new file mode 100644
index 00000000..57311f2a
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1,2 @@
+/local-roms
+/tmp
diff --git a/package.json b/package.json
index ec583c9f..d5cce761 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,8 @@
   "scripts": {
     "build": "webpack",
     "test": "mocha ./test/*.spec.js",
-    "test:watch": "mocha -w ./test/*.spec.js"
+    "test:watch": "mocha -w ./test/*.spec.js",
+    "prepublish": "npm run build"
   },
   "devDependencies": {
     "chai": "^3.5.0",
diff --git a/webpack.config.js b/webpack.config.js
index 1f45636d..426afa1b 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -2,11 +2,14 @@ var path = require("path");
 var webpack = require("webpack");
 
 module.exports = {
-  entry: "./src/index.js",
+  entry: {
+    "jsnes": "./src/index.js",
+    "jsnes.min": "./src/index.js",
+  },
   devtool: "source-map",
   output: {
     path: path.resolve(__dirname, "dist"),
-    filename: "jsnes.min.js",
+    filename: "[name].js",
     library: "jsnes",
     libraryTarget: "umd",
     umdNamedDefine: true
@@ -27,6 +30,7 @@ module.exports = {
   },
   plugins: [
     new webpack.optimize.UglifyJsPlugin({
+      include: /\.min\.js$/,
       sourceMap: true
     })
   ]