added link to oauth wiki in readme

Author: tschie

src/main/java/com/esri/samples/map/create_and_save_map/README.md

@@ -6,9 +6,12 @@
 
 <h2>How to use the sample</h2>
 
-Fill in your portal and registered app credentials of the starting dialog to authenticate. Then choose 
+<p>This sample requires you to setup your own app on arcgis.com. See the <a href="https://github.com/Esri/arcgis-runtime-samples-java/wiki/OAuth">wiki</a> for details.</p>
+
+<p>Fill in your portal and registered app credentials in the starting dialog to authenticate. Then, choose 
 the basemap and layers for your new map. To save the map, choose a title, tags and description (optional), and a folder 
-on your portal. Click the Save button to save the map to the chosen folder.
+on your portal (you will need to create one in your portal's My Content). Click the Save button to save the map to the 
+chosen folder.</p>
 
 <h2>How it works</h2>
 
@@ -23,19 +26,6 @@ on your portal. Click the Save button to save the map to the chosen folder.
   description, and portal folder</li>
 </ol>
 
-<h2>Authentication</h2>
-This sample uses the <a href="https://developers.arcgis.com/authentication/#named-user-login">named user login</a> 
-authentication pattern.  As a developer, you will need the following to make use of this pattern:  
-
-<h3>Your apps <b>Client ID</b></h3>
-Login to your <a href="http://developers.arcgis.com">ArcGIS Developers site</a> account and <a href="https://developers.arcgis.com/applications/#/new/">Register</a>
- your app. Once registered, select the <b>Authentication</b> tab taking note of your <b>Client ID</b>.
-
-<h3>A custom <b>Redirect URI</b></h3>
-
-While still under the <b>Authentication</b> tab in your account, navigate down the page to the <b>Redirect URIs</b> 
-section to setup the redirect URI. 
-
 <h2>Features</h2>
 
 <ul>