Added an Hello World

docs/basics/create-an-app.md

@@ -2,4 +2,22 @@
 title: Create an Application
 sidebar_position: 5
 ---
+this is an Hello World in ActionScript,each line explains what everything does so that you will a familiarity with the ActionScript Language.
+```
+package{ //tells where's the script locate which can later be use to import(for example:flash.display.Sprite)
 
+    import flash.display.Sprite; //imports the Sprite class(nessecery)
+
+    public class Main extends Sprite{
+        public function say(sentence:String){ //A Comment
+            trace(sentence); //print() function
+        }
+        public function Main(){ //the Main function,needs to have the same name as the class
+            say("Hello World"); //print the variable
+        }
+    }
+}
+```
+#### after you finish writing the code use mxmlc(which come with the AIR SDK) to compile it to a swf 
+
+`mxmlc helloworld.as`