diff --git a/README.md b/README.md
index 61d1b8d2..5e3dbd6d 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Mozilla Webmaker's mission is to help enable a new generation of digital creator
 Before you jump into the code you'll want to download, install, and configure the following:
 
 - [Android Studio](http://developer.android.com/sdk)
-- [Node 0.12+](https://nodejs.org/) w/ ES6 ("harmony") features enabled
+- [Node 4+](https://nodejs.org/) w/ ES6 ("harmony") features enabled
 - [NPM 2.11+](https://www.npmjs.com/) (comes bundled with node)
 
 #### Clone & Install Dependencies
@@ -22,7 +22,6 @@ Before you jump into the code you'll want to download, install, and configure th
 git clone https://github.com/mozilla/webmaker-android
 cd webmaker-android
 npm install
-npm run build
 ```
 
 #### Specifying a dev environment
diff --git a/package.json b/package.json
index 1986cee6..6cef56bd 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "1.5.1",
   "description": "Webmaker for Android.",
   "scripts": {
+    "postinstall": "npm start",
     "start": "npm run build",
     "build": "node npm_tasks/explore.js webmaker-core -- npm install && npm run copy:env && npm run build:core && npm run copy:core",
     "build:core": "node npm_tasks/explore.js webmaker-core -- npm run build",