v1.1.0

Naming this v1.1.0 to get around an issue with Galaxy. Installing the role from galaxy defaults to the original default v1.0 version which doesn't appear to be deletable.

PR 13

• Make user comment optional

PR 16

• Add optional gid attribute

PR 31

• groups_to_create is now a list of dictionaries. This allows users to more easily specify a gid.
• Fixed with_items: deprecation warnings from Ansible 2+
• Items in the users list take a new attribute of profile for setting up custom shell profiles.