Add custom OAI schema for pubmed uris
Add custom OAI schema for pubmed uris

ostwald/scrapi,alexgarciac/scrapi,icereval/scrapi,fabianvf/scrapi,erinspace/scrapi,mehanig/scrapi,CenterForOpenScience/scrapi,felliott/scrapi,mehanig/scrapi,CenterForOpenScience/scrapi,jeffreyliu3230/scrapi,felliott/scrapi,fabianvf/scrapi,erinspace/scrapi