bugfix: no repository
package update

- update: auto_shindanmaker v 1.1 => v 1.2
- update: self_limit v 0.2 => v 0.3
- update: yaked_tweet v 1.3 => v 1.4
update: document format to rdoc
version 1.5

- bugfix: no repository
- update: auto_shindanmaker v 1.1 => v 1.2
- update: self_limit v 0.2 => v 0.3
- update: yaked_tweet v 1.3 => v 1.4