389: Add category to update site

* updated category text

Author: wimjongman

it.baeyens.arduino.updatesite/category.xml

@@ -5,9 +5,7 @@
    </feature>
    <category-def name="Arduino" label="Arduino Eclipse Plugins">
       <description>
-         If you are starting with arduino or micro controllers in general I strongly advice to start using the Arduino IDE.
-
-The arduino eclipse plugin is easy to set-up (though harder than the Arduino IDE) and easy to use. It has the same icons for verify upload and serial monitor as the Arduino IDE.
+         Arduino development in the Eclipse IDE.
       </description>
    </category-def>
 </site>