Update python bindings install docs & fix typo in SetAtmosphereHeight binding

[lhennig]

I tried to install the python bindings according to the README.md but it did not work. In the end I checked the Makefile to see what install targets are available, and with make python and make python-install it worked. I updated the docs. I also fixed a typo in the python binding of SetAtmosphereHeight

[arguelles]

Simple change in documentation.

[arguelles]

I think these changes re good and should be merged.

[lhennig]

Thanks for the review! I will still wait a bit before merging. The reason is that I have seen that Basia made a pull request around three years ago where she wanted to merge her LV headers and python bindings. I will try to make her changes compatible with the current nuSQuIDS master branch. If this is successful, we ensure that the IceCube and KM3NeT analyses use the same implementation.

[lhennig]

I tried to make Basia's changes compatible with the latest version of the master branch. Surely this is somehow possible, but I could not figure out how. I would suggest that we merge this branch into master, since this branch compiles and works at runtime. Basia's branch includes more LV physics at this point than mine - for example, her branch has all isotropic LV coefficients included (on-diagonal and off-diagonal), while mine only has $c_{e\mu}$ and $c_{\mu\tau}$. Since I am using this branch for my ongoing analysis, I will update it continuously once I need the other LV coefficients, copy-pasting the physics parts in Basia's branch into my branch.

[lhennig]

Hi @cnweaver, do you approve the merge request?