add credits

docs/index.rst

@@ -22,6 +22,15 @@ available recipes_ to find something the better suits your 'taste' (i.e., your n
 
 Happy cooking! 😉 🥙 🍱 🍲
 
+
+Credits
+-------
+
+The structure and content of this repository draws inspiration from the
+`Consortium for Ocean-Sea Ice Modelling in Australia (COSIMA) <http://cosima.org.au/>`'s
+`Cookbook repository <https://github.com/COSIMA/cosima-recipes>` that holds recipes for
+analysing ocean-sea ice model output.
+
 .. _tutorials: tutorials.html
 .. _recipes: recipes.html