Add a check for git in install and tests

[gilfreund]

Hi,

Both the install and test required git to operate. As we are installing to a central NFS location, this is not the case for all out hosts.
I would recommend one of the following:

• Add a test for git existence:

command -v git &> /dev/null && echo true || echo false

• Add git to the conda environment

Thanks

Gil

[cnobles]

That's a great suggestion, I'll work that in in the next update. Thanks!