Add "bundle" into .gitignore

Signed-off-by: Youhei SASAKI <uwabami@gfd-dennou.org>
fix distclean target

Signed-off-by: Youhei SASAKI <uwabami@gfd-dennou.org>
Bundle settings

Signed-off-by: Youhei SASAKI <uwabami@gfd-dennou.org>