Made "End" field on "Membership Add" form default to "0000-00-00" (issue #20)

Made "End" field on "Membership Add" form default to "0000-00-00"
Temporary  fix for broken url redirect (issue #36)

Redirects user to home page after adding a member.
Added some thing to the TODO list.

Added some thing to the TODO list.
Updated readme.

Updated readme.