README.md in ProMotion-0.6.3 vs README.md in ProMotion-0.6.4

@@ -409,11 +409,11 @@
 ```ruby
 class SettingsScreen < ProMotion::GroupedTableScreen
   title "Settings"
 
   def on_load
-    add_right_nav_button(label: "Save", action: :save)
+    set_nav_bar_right_button("Save", action: :save)
     set_tab_bar_item(title: "Settings", icon: "settings.png")
   end
 
   # table_data is automatically called. Use this format in the return value.
   # It's an array of cell groups, each cell group consisting of a title and an array of cells.
@@ -747,10 +747,10 @@
   refreshing: "Refreshing data…",
   updated_format: "Last updated at %s",
   updated_time_format: "%l:%M %p"
 )</code></pre></td>
     <td>Class method to make the current table refreshable.
-    	<p>All parameters are optional. If you do not specify a a callback, it will assume you've implemented an <code>on_refresh</code> method in your tableview.</p>
+      <p>All parameters are optional. If you do not specify a a callback, it will assume you've implemented an <code>on_refresh</code> method in your tableview.</p>
     <pre><code>def on_refresh
   # Code to start the refresh
 end</code></pre>
     <p>And after you're done with your asyncronous process, call <code>end_refreshing</code> to collapse the refresh  view and update the last refreshed time and then <code>update_table_data</code>.</p></td>
     <img src="https://f.cloud.github.com/assets/139261/472574/af268e52-b735-11e2-8b9b-a9245b421715.gif" />