DESCRIPTION
-----------
This module allows you to specify that a block should be visible only within 
selected groups. This can be used for many purposes, from providing each
organic group with its own navigation menu, to allowing a group to highlight
its own featured content, etc.

REQUIREMENTS
------------
- Requires the organic groups module.
- Requires 'administer blocks' permissions.

INSTALLATION
------------
- Enable the module from administer >> modules.

USAGE
-----
- Go to administer >> blocks and click "Configure" next to a block.
- Expand the "Group visibility settings" fieldset.
- Check the "Show this block only within the following groups:" checkbox.
- Select one or more groups from the list.
- Save the form.
- To cancel using group-specific visibility on a block, uncheck the box 
  under "Group visibility settings" and save the form.

NOTES
-----
- This module updates a block's PHP visibility settings. It is _not_ 
  compatible with any other type of block view restriction.
- You can combine the PHP code og_block_visibility generates with other
  PHP code, but BE WARNED:  if you subsequently change the checked OG
  visibility settings, any additional PHP code added will be over-written and
  you will have to add it again, so make sure you preserve your additional PHP
  before changing the group visibility settings on any block.
- Blocks will show up publicly for open or moderated groups, and be
  visible to members only for invite-only or closed groups.

CREDITS
-------
Authored and maintained by Angela Byron of CivicSpace Labs
Sponsored by Raven Brooks of BuyBlue.org
Multiple group functionality sponsored by Evan Leeson of Catalyst Creative, Inc.