Put SOMETHING in the README

README.md

@@ -3,3 +3,24 @@
 Based on [Yeoman Ember.js Generator][ember-generator].
 
 [ember-generator]: https://github.com/yeoman/generator-ember
+
+## Folder Structure
+
+**TODO**: Add missing folders.
+
+<dl>
+    <dt>`app/`</dt>
+    <dd>
+        The folder structure output by `recroom new` (`yo recroom`).
+        Contains basic folder structure, package manifests, and
+        `application.hbs` and `index.html`, where your application's base
+        templates live. Also includes a `Gruntfile.js` that contains most
+        of the build tasks for your Rec Room app.
+    </dd>
+    <dt>`controller`</dt>
+    <dd>
+        Contains all Ember controller templates, both for simple `page`
+        scaffolds and more complicated `model` scaffolds (eg. single/plural
+        controllers, and edit controllers).
+    </dd>
+</dl>