spello: continously => continuously

Signed-off-by: Mattias Andrée <maandree@operamail.com>
Use randr in example of conf file instead of vidmode, randr is superior to vidmode because it supports multple monitors where as vidmode only supports multiple screens

Signed-off-by: Mattias Andrée <maandree@operamail.com>
Merge pull request #48 from maandree/man

Man page improvement and fix typos