Add a more prominent link to the guide (facebook#524)

* Add a more prominent link to the guide

As a contributor, I know where to find the documentation/guide since
know the codebase, but I've seen people miss the link to it in the
README, because it's not very prominent. Let's try to make it more
discoverable by including a link to it right on top of the page.

* Make the wording of links more obvious

* Rename the "How Do I...?" section to "User Guide" for consistency

README.md

@@ -2,6 +2,9 @@
 
 Create React apps with no build configuration.
 
+* [Getting Started](#getting-started) – How to create a new app.
+* [User Guide](https://github.com/facebookincubator/create-react-app/blob/master/template/README.md) – How to develop apps bootstrapped with Create React App.
+
 ## tl;dr
 
 ```sh
@@ -81,7 +84,7 @@ It correctly bundles React in production mode and optimizes the build for the be
 The build is minified and the filenames include the hashes.<br>
 Your app is ready to be deployed!
 
-## How Do I…?
+## User Guide
 
 The generated project will include a guide in its README.<br>
 You can also read its latest version [here](https://github.com/facebookincubator/create-react-app/blob/master/template/README.md).