Removed required attribute on command.
Removed required attribute on command.

rmboggs/nantcontrib,cgourlay/nantcontrib,cgourlay/nantcontrib,nant/nantcontrib,nant/nantcontrib,nant/nantcontrib,dahmage/nantcontrib,rmboggs/nantcontrib,dahmage/nantcontrib,rmboggs/nantcontrib,dahmage/nantcontrib,cgourlay/nantcontrib