first objectives and text in episode 4

Author: JaroCamphuijsen

_episodes/04-toy-example.md

@@ -5,11 +5,12 @@ exercises: 0
 questions:
 - "Key question (FIXME)"
 objectives:
-- "First learning objective. (FIXME)"
+- "Excecute ESMValTool using the example recipe provided."
+- ""
 keypoints:
 - "First key point. Brief Answer to questions. (FIXME)"
 ---
-FIXME
+Now we have installed and configures ESMValTool it is time to run a simple example and play with it. For this you need the data that you downloaded in the [setup](https://escience-academy.github.io/lesson-esmvaltool/setup.html).  
 
 {% include links.md %}