Add UMD builds

Made redux-sounds compatible with single-file UMD builds. Add the
<script> tag to your file, and reference the middleware as ReduxSounds.

.gitignore

@@ -2,3 +2,4 @@ node_modules
 coverage
 *.log
 lib
+dist

package.json

@@ -4,12 +4,16 @@
   "description": "Sound effect middleware for Redux.",
   "main": "lib/index.js",
   "files": [
+    "dist",
     "lib",
     "src"
   ],
   "scripts": {
     "lint": "eslint src",
-    "build": "babel src --out-dir lib",
+    "build:lib": "babel src --out-dir lib",
+    "build:umd": "webpack src/index.js dist/redux-sounds.js --config webpack.config.development.js",
+    "build:umd:min": "webpack src/index.js dist/redux-sounds.min.js --config webpack.config.production.js",
+    "build": "npm run build:lib && npm run build:umd && npm run build:umd:min",
     "test": "mocha --compilers js:babel-core/register --reporter spec test/*.js"
   },
   "repository": {
@@ -34,6 +38,7 @@
     "babel-cli": "^6.2.0",
     "babel-core": "^6.2.1",
     "babel-eslint": "^5.0.0-beta4",
+    "babel-loader": "^6.2.1",
     "babel-plugin-add-module-exports": "^0.1.1",
     "babel-plugin-transform-object-assign": "^6.3.13",
     "babel-preset-es2015": "^6.1.18",
@@ -43,6 +48,7 @@
     "eslint-config-airbnb": "^3.1.0",
     "mocha": "^2.2.5",
     "sinon": "^1.17.2",
-    "sinon-chai": "^2.8.0"
+    "sinon-chai": "^2.8.0",
+    "webpack": "^1.12.11"
   }
 }

webpack.config.base.js

@@ -0,0 +1,23 @@
+var webpack = require('webpack');
+
+module.exports = {
+  output: {
+    library: 'ReduxSounds',
+    libraryTarget: 'umd'
+  },
+
+  module: {
+    loaders: [
+      {
+        test:     /\.js$/,
+        loader:   'babel',
+        exclude:  /node_modules/,
+        include:  /src/
+      }
+    ]
+  },
+
+  resolve: {
+    extensions: ['', '.js']
+  }
+}

webpack.config.development.js

@@ -0,0 +1,15 @@
+'use strict';
+
+var webpack = require('webpack');
+var baseConfig = require('./webpack.config.base');
+
+var config = Object.create(baseConfig);
+
+config.plugins = [
+  new webpack.optimize.OccurrenceOrderPlugin(),
+  new webpack.DefinePlugin({
+    'process.env.NODE_ENV': JSON.stringify('development')
+  })
+];
+
+module.exports = config;

webpack.config.production.js

@@ -0,0 +1,21 @@
+'use strict';
+
+var webpack = require('webpack');
+var baseConfig = require('./webpack.config.base');
+
+var config = Object.create(baseConfig);
+
+config.plugins = [
+  new webpack.optimize.OccurrenceOrderPlugin(),
+  new webpack.DefinePlugin({
+    'process.env.NODE_ENV': JSON.stringify('production')
+  }),
+  new webpack.optimize.UglifyJsPlugin({
+    compressor: {
+      screw_ie8: true,
+      warnings: false
+    }
+  })
+];
+
+module.exports = config;