deleted:    litsbu/personal/thought/ask-questions
	deleted:    litsbu/personal/thought/how-to-use-SNS
	deleted:    litsbu/principle-of-life
	renamed:    litsbu/ask-questions -> litsbu/thought/ask-questions
	renamed:    litsbu/how-to-use-SNS -> litsbu/thought/how-to-use-SNS
	renamed:    litsbu/personal/thought/principle-of-life -> litsbu/thought/principle-of-life