Update Exercise 2 (submission format)

ex2/README.md

@@ -16,7 +16,7 @@ Running the script `ReadStructuredPoints.py` as provided, you will receive an er
 
 Your task is to fix this by adding the scalar values to draw something on the canvas. Try to understand the ordering of values, and maybe even create a small drawing by setting appropriate values.
 
-**Summary  of Tasks:** Change the POINT_DATA to create something on the provided "canvas". Be creative! You are allowed to change the dimensions of the grid.
+**Summary  of Tasks:** Change the POINT_DATA to create something on the provided "canvas" in `task1.vtk`. Be creative! You are allowed to change the dimensions of the grid.
 
 Note: An interesting line of code is `mapper.SetInterpolateScalarsBeforeMapping(False)`. Try changing the `False` to `True` and see what changes. We will go more into detail on this phenomenon in the next assignment.
 
@@ -114,9 +114,9 @@ This can be achieved by changing the description in `task2.vtk`:
 To test your experiments, use the provided script by running
 
 ``` shell
-python ReadUnstructuredGrid.py hourglass.vtk
+python ReadUnstructuredGrid.py task2.vtk
 ```
-**Summary of Tasks:** Manipulate the provided unstructured grid file to create the shown dataset.
+**Summary of Tasks:** Manipulate the provided unstructured grid file (`task2.vtk`) to create the shown dataset.
 
 ---
 
@@ -149,4 +149,4 @@ If you want to, you can create more mappers and actors and play around with the
 
 <img src="img/suzanne.png" width="600">.
 
-**Summary of Tasks:** Add a semi-transparent bounding box around Suzanne, and display Suzanne in wireframe mode. Additionally, be creative!
+**Summary of Tasks:** Add a semi-transparent bounding box around Suzanne, and display Suzanne in wireframe mode. Save your submission code as `task3.py`. Additionally, be creative!