update screenshot tutorial

Author: iche033

manifest.xml

@@ -503,7 +503,8 @@
     </tutorial>
 
     <tutorial title="Capture screenshot" ref='screenshot'>
-      <markdown version="1.9+">screenshot/tutorial.md</markdown>
+      <markdown version="1.9">screenshot/tutorial_1-9.md</markdown>
+      <markdown version="6+">screenshot/tutorial.md</markdown>
       <description>Shows how to capture a screen shot of Gazebo's render window.</description>
       <skill>beginner</skill>
       <tags>

screenshot/files/screenshot_icon_gzclient_6-0.png

@@ -1,10 +1,8 @@
 # Capture screenshots
 
-A screenshot capture feature has been added to the gzclient graphical user interface.
+To capture a screenshot of the scene displayed in the Gazebo 3D render window, find and click on the camera icon on the toolbar above the render window.
 
-Find and click on the camera icon on the toolbar above the render window.
-
-[[file:files/screenshot_icon_gzclient.png|640px]]
+[[file:files/screenshot_icon_gzclient_6-0.png|640px]]
 
 # Screenshot save location
 

screenshot/tutorial.md

@@ -0,0 +1,9 @@
+# Capture screenshots
+
+To capture a screenshot of the scene displayed in the Gazebo 3D render window, find and click on the camera icon on the toolbar above the render window.
+
+[[file:files/screenshot_icon_gzclient.png|640px]]
+
+# Screenshot save location
+
+The captured image will be saved to ~/.gazebo/pictures with a timestamped filename.