Update install.sh
Update install.sh

olsrd.org no longer allows access to there self hosted git repos.
virtualdxs/hsmm-pi,virtualdxs/hsmm-pi,virtualdxs/hsmm-pi,cbegg50/hsmm-pi-direct,argilo/hsmm-pi,cbegg50/hsmm-pi-direct,argilo/hsmm-pi,argilo/hsmm-pi,argilo/hsmm-pi,cbegg50/hsmm-pi-direct,urlgrey/hsmm-pi,cbegg50/hsmm-pi-direct,virtualdxs/hsmm-pi,urlgrey/hsmm-pi,urlgrey/hsmm-pi,urlgrey/hsmm-pi