readme fix: make more clear that autosearch is enabled by default

Author: Ruben

README.md

@@ -278,7 +278,7 @@ How to show different things in Ember Data Table
 - `@autoSearch` :: If truthy, search is automatically triggered
   without explicitly pressing search.  If a number is provided, this is
   the time in milliseconds to wait for input before sending the request (input douncing).  
-  If no number is supplied a default of 2000ms is used.
+  If not set, autosearch is enabled with a default wait of 2000ms.
 - `@showMenu` :: If false, the component will hide the supplied
   menu.  This allows controlling whether the menu should be shown
   dynamically.  The menu may contain actions which act on the current