[ADD] adapt migrate.py for version 8.0
[IMP] correct shebang and make executable
Merge branch '8.0' into migrate.py-8.0
[IMP] update help for migrate.py
[IMP] link to head, not to specific branch
Merge pull request #42 from hbrunn/migrate.py-8.0

[ADD] adapt migrate.py for version 8.0