Inline is-mergeable-object in the CJS build, too

Also make the rollup build even quicker by spitting out all the outputs in one go

package.json

@@ -18,20 +18,16 @@
   },
   "main": "dist/umd.js",
   "module": "dist/es.js",
-  "browser": "index.js",
+  "browser": "dist/cjs.js",
   "engines": {
     "node": ">=0.10.0"
   },
   "scripts": {
-    "build": "npm run build:umd && npm run build:es",
-    "build:umd": "rollup -c --format umd --output dist/umd.js",
-    "build:es": "rollup -c --format es --output dist/es.js",
-    "test": "tap test/*.js && jsmd README.markdown"
-  },
-  "dependencies": {
-    "is-mergeable-object": "~1.0.3"
+    "build": "rollup -c",
+    "test": "npm run build && tap test/*.js && jsmd README.markdown"
   },
   "devDependencies": {
+    "is-mergeable-object": "~1.0.3",
     "jsmd": "0.3.1",
     "rollup": "0.41.6",
     "rollup-plugin-commonjs": "8.0.2",

rollup.config.js

@@ -1,12 +1,18 @@
 import resolve from 'rollup-plugin-node-resolve'
 import commonjs from 'rollup-plugin-commonjs'
 
+const pkg = require('./package.json')
+
 export default {
 	entry: 'index.js',
 	moduleName: 'deepmerge',
 	plugins: [
 		commonjs(),
 		resolve()
 	],
-	dest: 'bundle.js'
+	targets: [
+		{ dest: pkg.main, format: 'umd' },
+		{ dest: pkg.module, format: 'es' },
+		{ dest: pkg.browser, format: 'cjs' },
+	]
 }