Update Exercise 9 (Submissoin Format)

ex9/README.md

@@ -9,7 +9,7 @@ However, you should see that the current color map is insufficient to show the d
 
 <img src="img/colormap.png" width="300">
 
-**Summary of Tasks:** Create a meaningful color map for the vector field.
+**Summary of Tasks:** Create a meaningful color map for the vector field. Save your submission code as `task1.py`.
 
 ## Task 2: Glyph-based Visualization (2P)
 In this task we want to enhance the visualization from above by rendering the vector field as glyphs. To achieve this, you can use the `vtkGlyph2D` class. To use this filter, you must set two inputs, one of them being a source. We ask you to use arrows as source, this will create glyphs in the shape of arrows. To complete this task successfully you have to play around with the scale and quantity of the glyphs.
@@ -18,7 +18,7 @@ A possible solution could look like the following:
 
 <img src="img/glyphs.png" width="500">
 
-**Summary of Tasks:** Create a meaningful glyph based rendering of the vector field.
+**Summary of Tasks:** Create a meaningful glyph based rendering of the vector field. Save your submission code as `task2.py`.
 
 ## Task 3: Streamlines(2P)
 As you probably have seen in Task 2, using glyph based visualization might not always be the best idea. 
@@ -29,4 +29,4 @@ A result could look like this:
 <img src="img/streamlines.png" width="300">
 
 
-**Summary of Tasks:** Add streamlines to the vector field.
+**Summary of Tasks:** Add streamlines to the vector field. Save your submission code as `task3.py`.