Skip installing workflows if same directories
Skip installing workflows if same directories

Add a check in `install_workflows.sh` to check to see if the source and
destination directories are the same. If so, mention this to the user
and exit 0. Otherwise proceed onwards to copy the workflows from the
source to the destination directory.

DudLab/docker_nanshe_workflow,nanshe-org/docker_nanshe_workflow,DudLab/docker_nanshe_workflow,nanshe-org/docker_nanshe_workflow