Fix typo
Merge pull request #179 from skearnes/pbsipcluster

Fix typo
Add pre_args
PEP8
Move ssh command
Update docstring since pre_args only used with ssh launcher
Merge pull request #181 from skearnes/pbsipcluster

Add pre_args
stuff
notes
typo
Merge pull request #182 from rmcgibbo/pbsipcluster2

Connect more engines to existing cluster