adds statement regarding the duration of the workshop (#38)

Author: Nikoleta-v3

paper.md

@@ -124,6 +124,10 @@ timetable is:
   reflect on the results of each notebook and their interpretation.
 
 These instructions can also be found in the [README](https://github.com/Nikoleta-v3/Game-Theory-and-Python/blob/master/README.rst).
+Though we recommend that the material can be covered in 2 hours, in both a workshop
+environment and through independent learning, some audience/learners might not
+complete all the exercises. We recommend any facilitator/learner to adjust as
+necessary.
 
 # Recent Uses