Create CITATION
Create CITATION

Former-commit-id: cd94dec958c244f2ce40117ab775040c61207a04 [formerly cc04015deddc5c9da6ce75726c160dad2ad768ba]
Former-commit-id: 7459e7121f6d920c15b5d0e99fec2f68687578ed
LibraryCarpentry/librarycarpentry.github.io,LibraryCarpentry/librarycarpentry.github.io,LibraryCarpentry/librarycarpentry.github.io