docs: add more installation instructions

Author: Hugo Vieilledent

README.md

@@ -13,9 +13,7 @@ $ cat tmp/deploy-dist/index.json
   "assets/dummy.css": "assets/dummy-d41d8cd98f00b204e9800998ecf8427e.css",
   "assets/dummy.js": "assets/dummy-f1caa4785f44f7dc0ca9118458c120f8.js",
   "assets/vendor.js": "assets/vendor-b3a3b580d0c1bf83382792291e35020b.js",
-  "assets/vendor.css": "assets/vendor-d41d8cd98f00b204e9800998ecf8427e.css",
-  "crossdomain.xml": "crossdomain.xml",
-  "robots.txt": "robots.txt"
+  "assets/vendor.css": "assets/vendor-d41d8cd98f00b204e9800998ecf8427e.css"
 }
 ```
 
@@ -27,17 +25,38 @@ For more information on what plugins are and how they work, please refer to the
 
 ## Setup
 
-- Requirements
+### Requirements
 
-You'll first have to [setup `ember-cli-deploy-s3-index`](https://github.com/ember-cli-deploy/ember-cli-deploy-s3-index#quick-start).
+You'll first have to install and configure:
 
-- Install this plugin
+- [`ember-cli-deploy`](https://github.com/ember-cli-deploy/ember-cli-deploy)
+- [`ember-cli-deploy-s3`](https://github.com/ember-cli-deploy/ember-cli-deploy-s3#quick-start)
+- [`ember-cli-deploy-s3-index`](https://github.com/ember-cli-deploy/ember-cli-deploy-s3-index#quick-start)
+- [`ember-cli-deploy-build`](https://github.com/ember-cli-deploy/ember-cli-deploy-build)
+- [`ember-cli-deploy-revision-data`](https://github.com/ember-cli-deploy/ember-cli-deploy-revision-data)
+- [`ember-cli-deploy-display-revisions`](https://github.com/duizendnegen/ember-cli-deploy-display-revisions)
+
+You can do this like so:
+
+```shell
+ember install ember-cli-deploy
+ember install ember-cli-deploy-s3
+ember install ember-cli-deploy-s3-index
+ember install ember-cli-deploy-build
+ember install ember-cli-deploy-revision-data
+ember install ember-cli-deploy-display-revisions
+```
+
+### Install this plugin
 
 ```bash
 $ ember install ember-cli-deploy-index-json
 ```
 
-- Configuration
+### Configuration
+
+When `ember install ember-cli-deploy` was run, it should have
+generated a a file at `your-app/config/deploy.js`.
 
 Edit `config/deploy.js` so that your configuration looks like the snippet below.
 
@@ -51,7 +70,61 @@ s3: {},
 }
 ```
 
-_In depth:_ The idea is that `revision-data`, `s3-index` and `index-json` have the same `filePattern` value. `index-json` is not present in this example because we're using its default `filePattern` value.
+_In depth:_ The idea is that `revision-data`, `s3-index` and
+`index-json` have the same `filePattern` value. `index-json` is not
+present in this example because we're using its default `filePattern` value. More on this in the Ember CLI Deploy plugin section.
+
+Here is a full example of this file, getting the Amazon S3 information
+from unix environment variables.
+
+```js
+/* eslint-env node */
+"use strict";
+
+module.exports = function(deployTarget) {
+  let ENV = {
+    s3: {},
+    "revision-data": {
+      filePattern: "index.json"
+    },
+    "s3-index": {
+      filePattern: "index.json"
+    },
+    build: {}
+  };
+
+  if (deployTarget === "development") {
+    ENV.build.environment = "development";
+    // configure other plugins for development deploy target here
+  }
+
+  if (deployTarget === "staging") {
+    ENV.build.environment = "production";
+    // configure other plugins for staging deploy target here
+  }
+
+  if (deployTarget === "production") {
+    ENV.build.environment = "production";
+    // configure other plugins for production deploy target here
+    let s3Config = {
+      allowOverwrite: process.env.ALLOW_OVERWRITE === "true" ? true : false,
+      signatureVersion: "v4",
+      accessKeyId: process.env.AWS_ACCESS_KEY_ID,
+      secretAccessKey: process.env.AWS_SECRET_ACCESS_KEY,
+      bucket: process.env.S3_BUCKET_URI,
+      region: process.env.S3_REGION
+    };
+
+    Object.assign(ENV.s3, s3Config);
+    Object.assign(ENV["s3-index"], s3Config);
+  }
+
+  // Note: if you need to build some configuration asynchronously, you can return
+  // a promise that resolves with the ENV object instead of returning the
+  // ENV object synchronously.
+  return ENV;
+};
+```
 
 ## Usage
 
@@ -77,6 +150,18 @@ For detailed information on what plugin hooks are and how they work, please refe
 
 For detailed information on how configuration of plugins works, please refer to the [Plugin Documentation][1].
 
+You have to edit `config/deploy.js` so that your configuration looks like the snippet below:
+
+```js
+'index-json': {
+  filePattern: '...',
+  fileIgnorePattern: '...',
+  indexPath: '...',
+  distDir: '...',
+  distFiles: []
+}
+```
+
 ### filePattern
 
 Files matching this pattern will be included in the index.