Update eCryptFS maintainers

Remove myself from the eCryptFS kernel maintainers.

Add the ecryptfs.org website.

I will continue to actively maintain and monitor the ecryptfs-utils
user space project and packages.

Signed-off-by: Dustin Kirkland <dustin.kirkland@gazzang.com>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>