Updated readme

README.rst

@@ -5,12 +5,28 @@ Grady -- will correct you!
 This is a tool developed for the simplified process of correcting exams
 at University of Goettingen. It is deployed as a Django web application.
 
-Currently it is in a very early stage of development and not usable.
-
 TODO
 ====
 
-- create necessary views
 - get sample data
 - create import scripts for user and submission import (depends: get sample data)
-- add simple design
+- improve codemirror usability
+- provide one time passwords for student accounts
+- use postgresql
+- implement better capabilities for the reviewer (optional)
+
+Overview
+========
+
+Grady has three basic functions for the tree types of users
+
+- Reviewers can
+    + edit feedback that has been provided by tutors
+    + mark feedback as final if it should not be modified (only final feedback is shown to students)
+    + delete feedback (submission will be reassigned)
+- Tutors can
+    + request a submission that they have to correct and submit feedback for
+    + deleted their own feedback
+    + they do not see which student submitted the solution
+- Students can
+    + review their final feedback and score in the post exam review