Add stubs.

Signed-off-by: OGINO Masanori <masanori.ogino@gmail.com>
Use relative URLs to test theme locally.

Signed-off-by: OGINO Masanori <masanori.ogino@gmail.com>
Generate period arhives.

Signed-off-by: OGINO Masanori <masanori.ogino@gmail.com>