Merge pull request #1 from satra/fix/eddy

a workflow fix, auto tests and some PEP8 changes
Merge pull request #785 from JensNRAD/eddy_fix

Fix for Eddy-Wrapper does not work properly #769
Don't call subprocess.Popen twice when output == 'file'.

This fixes the real issue behind https://github.com/nipy/nipype/issues/705
Don't call subprocess.Popen twice when output == 'file'.

This fixes the real issue behind https://github.com/nipy/nipype/issues/705
Merge branch 'master' of github.com:carlohamalainen/nipype

This is for 421601e8b9d3fd259061590a0ed6b962c466cd8c regarding
"Don't call subprocess.Popen twice when output == 'file'."
Merge pull request #789 from carlohamalainen/master

Don't call subprocess.Popen twice when output == 'file'.
fix: update for use in workflow and reflect new nipype conventions