Commented out all references to SDK Nifty Editor.

src/docs/asciidoc/jme3/advanced/nifty_gui_best_practices.adoc

@@ -25,13 +25,13 @@ You can build Nifty GUIs using XML or Java syntax. Which one should you choose?
 *  *Example:* You design two UIs with slightly different XML layouts for mobile and desktop. If you use the same IDs for equivalent elements, your dynamic Java code works the same no matter which of the two base XML layout you use it on. This allows you to switch between a phone and a desktop UI by simply swapping one base XML file.
 
 
-== Edit and Preview XML in the SDK
+//== Edit and Preview XML in the SDK
 
-*  Use the <<sdk#,jMonkeyEngine SDK>> New File wizard to create a new XML file (from the +++<abbr title="Graphical User Interface">GUI</abbr>+++ category, "`Empty Gui`").
-*  The <<sdk#,jMonkeyEngine SDK>> includes an XML editor and a special previewer for Nifty +++<abbr title="Graphical User Interface">GUI</abbr>+++ files.
+//*  Use the <<sdk#,jMonkeyEngine SDK>> New File wizard to create a new XML file (from the +++<abbr title="Graphical User Interface">GUI</abbr>+++ category, "`Empty Gui`").
+//*  The <<sdk#,jMonkeyEngine SDK>> includes an XML editor and a special previewer for Nifty +++<abbr title="Graphical User Interface">GUI</abbr>+++ files.
 *  When you open an XML file, you can switch between XML Editor and +++<abbr title="Graphical User Interface">GUI</abbr>+++ Preview mode.
 
-TIP: The +++<abbr title="Graphical User Interface">GUI</abbr>+++ category in the New File wizard also contains Nifty code samples.
+//TIP: The +++<abbr title="Graphical User Interface">GUI</abbr>+++ category in the New File wizard also contains Nifty code samples.
 
 
 == Validate the XML before loading