fixup! Add javascript getting started to pubsub

Author: m-hulbert

content/getting-started/javascript.textile

@@ -8,7 +8,6 @@ This guide will get you started with Ably Pub/Sub in JavaScript.
 
 It will take you through the following steps:
 
-* Complete the prerequisites before you begin.
 * Create a client and establish a realtime connection to Ably.
 * Attach to a channel and subscribe to its messages.
 * Publish a message to the channel for your client to receive.
@@ -19,13 +18,16 @@ h2(#prerequisites). Prerequisites
 
 * Sign up for an Ably account.
 * Create a new app, and create your first API key.
-** Your API key will need the @publish@, @subscribe@, @presence@ and @history@ capabilities.
+* Your API key will need the @publish@, @subscribe@, @presence@ and @history@ capabilities.
 * Install the Ably CLI: @npm install -g @ably/cli@
 * Run @ably login@ in the terminal and follow the prompts to provide an access token to the Ably CLI.
 * Set the default app to use with @ably apps switch@ and select an API key to use for operations with @ably auth keys switch@.
-
 * Install the Ably Pub/Sub JavaScript SDK in a new project within your IDE: @npm install ably@
 
+<aside data-type='note'>
+<p>The code examples in this guide include a demo API key. If you wish to interact with the Ably CLI and view outputs within your Ably account, ensure that you replace them with your own API key.</p>
+</aside>
+
 h2(#step-1). Step 1: Connect to Ably
 
 Clients establish a connection with Ably when they instantiate an SDK. This enables them to send and receive messages in realtime across channels.