Docstanya2 (#312)

* udpate chapter1

* add jupyter notebook

* jupyter chapter1 fixed

* cleanup chapter 1 jupyter

* add tmp_T42_to_POP43_conserv file

* chapter 2 and chapter 3

* Changes to Jupyter Notebooks 1 and 2

* clean up

* update chapter4

* chapter 4 regridder opendap

* chapter 2 using OpenDAP

* chapter 2 using OpenDAP

* update all chapters

* Changes made to Section 2

* Changes mae to Section 1, 2 and API

* merge jupyter notebook

* fix flake8

* merge master