run takes a string, not a list.


git-svn-id: https://svn.apache.org/repos/asf/libcloud/trunk@1454664 13f79535-47bb-0310-9956-ffa450edef68
Add docstrings.


git-svn-id: https://svn.apache.org/repos/asf/libcloud/trunk@1454665 13f79535-47bb-0310-9956-ffa450edef68