Removed to too early generation of processSucceeded status XML file,
when the outputs are not yet injected to the template.
Merge pull request #22 from TobiasKipp/master

Removed to too early generation of processSucceeded status XML file,
use os.devnull to avoid a deadlock by subprocess.PIPE when 
it is not read anyhow. os.devnull avoids it printing on the 
wps server.
Merge pull request #23 from TobiasKipp/master

use os.devnull to avoid a deadlock by subprocess.PIPE when
Merge remote-tracking branch 'upstream/master'