Example in documentation does not work

Hi,

I copied / pasted the example found on the package documentation

   import sys
   from gridtk.sge import JobManager
   from gridtk.tools import make_shell

   manager = JobManager()
   command = make_shell(sys.executable, ['myscript.py', '--help'])
   job = manager.submit(command)

and it was not working. The thing is that the database parameter when creating the manager was missing. Maybe you would like to update the doc ? Thanks