Update install instructions for conda-forge

[jthorton]

Is your feature request related to a problem? Please describe.
Now that mace is available with all dependencies via conda-forge as pymace it would be great to have the install instructions also updated!

[ilyes319]

Yes we should do that, I am wondering why the name is pymace @davkovacs, I thought we were going for mace-torch just like pypi.

[jthorton]

It looks like someone from the community made the conda-package, is the plan to also create mace-torch or should we just reach out and also become maintainers of pymace and promote that installation pathway?

[gabor1]

it would be better to keep mace-torch as the name

[ilyes319]

We should make it mace-torch and ask the person making pymace to remove the package.

[jthorton]

Okay you should be able to copy the recipe of pymace and change the name to mace-torch and add that, note you might need to add something which does not allow people to install them both at the same time as well.