Chek comments about DCAS

[csokaimola]

Here are my comments about the most recent version of Model policy sheet DCAS (most of my comments were integrated already since last week, not much is left):

• I am missing:
  1. List datasets and exhibits in the README (although it might not be that important, since in most cases the code is self-explanatory)
  2. Encourage authors to use a main script and set seed if applicable.