add credits

COSIMA deserves acknowledgement

README.md

@@ -40,3 +40,9 @@ Tutorials that get you started
 ### [Recipes](https://atmospheric-cookbook.readthedocs.io/en/latest/recipes.html)
 The main part of this cookbook: All the recipes! These are Jupyter notebooks for either simple or not-so-simple diagnostics and analyses. All notebooks are aimed to be self-contained and  well-documented and explained.
 If you can find a recipe that suits your purposes, then this is the best place to start.
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+## Credits
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+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.
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