Add instructions to README

README.md

@@ -2,6 +2,53 @@
 
 > Webpack loader to automatically npm install & save dependencies.
 
+### Why?
+
+It sucks to <kbd>Ctrl-C</kbd> your
+build script & server just to install
+a dependency you didn't know you needed until now.
+
+Instead, use `require` or `import` how
+you normally would and `npm install` will happen automatically between reloads.
+
+### Usage
+
+In your `webpack.config.js`:
+
+```js
+module: {
+  postLoaders: [
+    {
+      exclude: /node_modules/,
+      loader: "npm-install-loader",
+      test: /\.js$/,
+    },
+  ],
+}
+```
+
+This will ensure that any other loaders
+(e.g. `eslint-loader`, `babel-loader`,e tc.) have completed.
+
+### Saving
+
+This loader simply runs `npm install [modules]`.
+
+I recommend creating an `.npmrc` file
+in the root of your project with:
+
+```ini
+save=true
+```
+
+This will automatically save any dependencies anytime you run `npm install` (no need to pass `--save`).
+
+
+### License
+
+> MIT License 2015 © Eric Clemmons
+
+
 [![travis build](https://img.shields.io/travis/ericclemmons/npm-install-loader.svg)](https://travis-ci.org/ericclemmons/npm-install-loader)
 [![Coverage Status](https://coveralls.io/repos/ericclemmons/npm-install-loader/badge.svg?branch=master&service=github&style=flat-square)](https://coveralls.io/github/ericclemmons/npm-install-loader?branch=master)
 [![version](https://img.shields.io/npm/v/npm-install-loader.svg)](http://npm.im/npm-install-loader)