Update quickstart and tutorials for v5

doc/quickstart.hbs

@@ -5,6 +5,8 @@ layout: doc.hbs
 
 # Quick Start
 
+This primer shows you how to put a simple map on a web page.
+
 ## Put a map on a page
 
 Below you'll find a complete working example.  Create a new file, copy in the contents below, and open in a browser:
@@ -54,6 +56,8 @@ To include a map a web page you will need 3 things:
 
 ### Include OpenLayers
 
+**Caveat:** In production, it is not recommended to include dependencies as script tag. Instead, we recommend bundling the application together with its dependencies, as explained in the [Building an OpenLayers Application](./tutorials/bundle.html) tutorial.
+
 ```xml
   <script src="https://openlayers.org/en/{{ latest }}/build/ol.js" type="text/javascript"></script>
 ```