Update readme

[adagj]

New feature type

Other (please explain below)

What is this new feature?

We should update README to have a recipe for NIRD. E.g we don't need the users to install their own conda, they can use module load

On NIRD, load the conda module: $ module load Anaconda3/2022.05
create a directory where the conda files can be stored:
$ mkdir /projects/NS____K/user/conda
set that as your conda storage space:
$ my_conda_storage=/cluster/projects/NS____K/user/conda
$ export CONDA_PKGS_DIRS=${my_conda_storage}/package-cache
Clone the ADF repository:
$ git clone https://github.com/NCAR/ADF ADF
$ cd ADF
create the conda environment (this will probably take some time):
$ conda env create -f env/conda_environment.yaml

Or maybe there is even a better way?

NorESMhub/noresm3_dev_simulations#17

Assistance required?

Yes, I am requesting a new feature but won't have time to develop it

Extra info

No response