docs: Documentation update, initial preparation for version 2.1 release

Change-Id: I3694a8791b9540fc1b926a83ff55421b47e0f1e2
diff --git a/docs/source/tutorial.rst b/docs/source/tutorial.rst
index 37d7fe4..d74bdf0 100644
--- a/docs/source/tutorial.rst
+++ b/docs/source/tutorial.rst
@@ -20,20 +20,18 @@
 
     intro
     getting-started
+    faq
+    examples   
     helpers
     cs
     fw
     applications
-
-.. toctree::
-    :maxdepth: 2
-
-    examples
     metric
-    faq
     parallel-simulations
+    guide-to-simulate-real-apps
     ndnsim-research-papers
 
+
 .. toctree::
     :hidden:
     :glob: