A few tweaks to readme

README.md

@@ -6,9 +6,9 @@ This is a minimal Electron application based on the [Quick Start Guide](http://e
 
 A basic Electron application needs just these files:
 
-- `index.html` - A web page to render.
-- `main.js` - Starts the app and creates a browser window to render HTML.
 - `package.json` - Points to the app's main file and lists its details and dependencies.
+- `main.js` - Starts the app and creates a browser window to render HTML. This is the app's **main process**.
+- `index.html` - A web page to render. This is the app's **renderer process**.
 
 You can learn more about each of these components within the [Quick Start Guide](http://electron.atom.io/docs/latest/tutorial/quick-start).