Update README.md

README.md

@@ -139,7 +139,7 @@ To convert vector graphic to raster graphic, there are several steps we need to
 
 ![Tasks](misc/tasks.png?raw=true)
 
-The assignment is divided into nine major tasks, which are described below in the order the course staff suggests you attempt them. You are of course allowed to do the assignment in any order you choose. Although you have 3 weeks to complete this assignment, the assignment **involves significant implementation effort. Also, be advised that meeting the requirements of later tasks may involve restructuring code that you implemented in earlier ones.** We strongly recommend that you create a checkpoint to back up your code after completing tasks 1-4. All extra credit code you write for tasks 1-8 will be graded along with final, so don't worry too much about trying to get them done for the checkpoint, and instead focus more on completing the tasks themselves.
+The assignment is divided into nine major tasks, which are described below in the order the course staff suggests you attempt them. You are of course allowed to do the assignment in any order you choose. Although you have 3 weeks to complete this assignment, the assignment **involves significant implementation effort. Also, be advised that meeting the requirements of later tasks may involve restructuring code that you implemented in earlier ones.** 
 
 ### Grading