Added admonition definitions.

src/docs/asciidoc/documentation.adoc

@@ -11,6 +11,17 @@ This documentation wiki contains installation and configuration guides, jME codi
 
 You are also very welcome to fix mistakes or spelling as well as unclear paragraphs using the "`Wiki`" menu on top or the "`Edit`" buttons after each paragraph. You have to be logged in to edit the wiki.
 
+== Admonition Definitions
+
+NOTE: This is a Note Admonition. They are used to give you additionl information about the topic at hand.
+
+TIP: This is a Tip Admonition. They are intended to give you a small but useful piece of practical advice.
+
+IMPORTANT: This is an Important Admonition. This means the information is of great significance or value and should not be ignored.
+
+CAUTION: This is a Caution Admonition. When you see these you should pay particular attention to the information and care should be taken to avoid mistakes.
+
+WARNING: This is a Warning Admonition. The information should be taken very seriously and indicates a possible problem, or other unpleasant situation may arrise if ignored.
 
 == Install
 
@@ -87,7 +98,7 @@ Are you an experienced Java developer who wants to add new features or contribut
 
 *  Get inspired by existing <<jme3/contributions#,contributions>>
 *  link:https://github.com/jMonkeyEngine/jmonkeyengine/blob/master/CONTRIBUTING.md[How to contribute to jMonkeyEngine]
-*  link:https://github.com/jMonkeyEngine/wiki[Become a Wiki Editor] 
+*  link:https://github.com/jMonkeyEngine/wiki[Become a Wiki Editor]
 *  link:http://hub.jmonkeyengine.org/c/contribution-depot-jme3[Chime in on the Contributors Forum]
 *  <<jme3/jme3_source_structure#,Learn about the source structure>>
 *  <<sdk#development,Write jMonkeyEngine SDK plugins and visual editors>>