This makes the README.rst more self-contained, and allows one to thin the README.md of abitutorials (that can focus on jupyter), and decrease the duplication of information.
Coverage remained the same at 89.252% when pulling 18b646cac03267c5f9c9332b9a41f9fee52c1e4c on gonzex:develop into 74b58de229f374f0dd1235ede6f8572d96a07e48 on abinit:develop.
This makes the README.rst more self-contained, and allows one to thin the README.md of abitutorials (that can focus on jupyter), and decrease the duplication of information.