Squashed commit of the following:

commit 44e8d9c9534bb54fe7e142fda4c9b37c2ce7a908
Author: Robert Guthrie <rob@guthr.ie>
Date:   Fri Sep 12 16:10:46 2014 +1200

    fix spec

commit 6573c0c8ca36c63425ab9377cfd1f0d4d96729cd
Merge: 6e69605 03df377
Author: Robert Guthrie <rob@guthr.ie>
Date:   Fri Sep 12 15:35:18 2014 +1200

    beh

commit 6e696057b72e19f74639cac46ed1a432664dc6e2
Author: Robert Guthrie <rob@guthr.ie>
Date:   Fri Sep 12 15:34:23 2014 +1200

    add better error message

commit 03df377381b5757e20c9114179036189938c6f11
Merge: 760ec94 1617a76
Author: Richard Bartlett <rich@loomio.org>
Date:   Fri Sep 12 14:01:34 2014 +1200

    Merge branch 'is-commercial' of github.com:loomio/loomio into is-commercial

commit 760ec9459f63ce3e053bde189b2b529503acdb14
Author: Richard Bartlett <rich@loomio.org>
Date:   Fri Sep 12 14:00:41 2014 +1200

    change error message

commit 1617a765162828df1e81a6e0582f46aa915eb8fe
Author: Robert Guthrie <rob@guthr.ie>
Date:   Fri Sep 12 13:27:24 2014 +1200

    finish

commit dca8c0dfb6ac40220fe56133b94d23c324b577ed
Author: Robert Guthrie <rob@guthr.ie>
Date:   Fri Sep 12 13:21:37 2014 +1200

    tidyer

commit 802348818771af6745180295d3dd6f4379fffa56
Merge: 2d9d644 95c166f
Author: Robert Guthrie <rob@guthr.ie>
Date:   Fri Sep 12 13:17:53 2014 +1200

    good enough way to segment commercial groups from non commercial

commit 2d9d644fae1f6aca5338a16d893c94da0ba4267b
Author: Robert Guthrie <rob@guthr.ie>
Date:   Fri Sep 12 12:29:20 2014 +1200

    bad first attempt
Merge pull request #1676 from loomio/is-commercial

Is commercial?