redirect to crossref metadata search when query is for crossref doi. Closes #41
redirect to crossref metadata search when query is for crossref doi. Closes #41

sci-gaia/doi-metadata-search,sci-gaia/doi-metadata-search,crosscite/doi-metadata-search,sci-gaia/doi-metadata-search,crosscite/doi-metadata-search,crosscite/doi-metadata-search