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)
Pulls @bfhenderson's help fix in, adds docs for 0.4.10
Merges in admin_only kwarg from @rbp