INSTALL.md: add procedure to relax permission in Fedora/Arch

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
set name with machine name

- use same way with virtualbox to set name
- todo: vm name conflict check
   need driver func to detect existing vms

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
support multi-vm/multi-net

- use update feature in ruby-libivrt 0.5.2+

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
set default network vagrant

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
Merge branch 'fix_setname' into next
Merge branch 'multi-network' into next