Adding an admin_only kwarg to respond_to() and hear(), tied to WILL_ADMINS env variable
Adding documentation for the WILL_ADMINS variable
Adding myself (rbp) to AUTHORS
Using hipchat "@mention name" terminology
Using semicolon as separator for WILL_ADMIN, for consistency with  WILL_ROOMS (but allowing leading and spaces in admin names)
WILL_ADMINS = "*" means everyone is an admin, and is the default when WILL_ADMINS is not set.
Pulls @bfhenderson's help fix in, adds docs for 0.4.10
Merges in admin_only kwarg from @rbp
Merge pull request #39 from rbp/admin_only

Admin only
Makes storage commands admin-only.
Better docs of admin_only backwards compatabilty.
Merge commit 'f8f09537307e8cac8d950fb3c24665701f8baa55'

Conflicts:
	will/plugins/help.py