Installs the demo archive for DBS processing tools described
'DBSproc: An open source process for DBS electrode localization
and tractographic analysis'
Lauro PM, Vanegas-Arroyave N, Huang L, Taylor PA, Zaghloul KA,
Lungu C, Saad ZS, Horovitz SG (2016).
Hum Brain Mapp 37(1):422-433. dx.doi.org/10.1002/hbm.23039
After the archive is downloaded and unpacked, see its README.txt
[-wget]: Use wget to download archive. Script chooses by default
with preference for curl
[-curl]: Use curl to download archive. Script chooses by default