Update README.md

Author: john0005

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

@@ -17,13 +17,13 @@ chosen folder.</p>
 
 <p>To create and save a map to your portal for use in an app:</p>
 <ol>
-  <li>Create an <code>ArcGISMap</code> with a <code>Basemap</code> and operational layers</li>
+  <li>Create an <code>ArcGISMap</code> with a <code>Basemap</code> and operational layers.</li>
   <li>Create an <code>OAuthConfiguration</code> with your portal and app credential.</li>
-  <li>Add the configuration to the <code>AuthenticationMangager</code></li>
+  <li>Add the configuration to the <code>AuthenticationMangager</code>.</li>
   <li>Create a <code>Portal</code> and load it. Use a custom <code>AuthenticationChallengeHandler</code> to 
-  authenticate with your username and password</li>
+  authenticate with your username and password.</li>
   <li>Once authenticated, save the map by calling <code>map.saveMapAsAsync()</code>, passing in the title, tags, 
-  description, and portal folder</li>
+  description, and portal folder.</li>
 </ol>
 
 <h2>Features</h2>