Update README.md to use our heroku hosted custom badgekit-api
Update README.md to use our heroku hosted custom badgekit-api

guahanweb/PaperBadger,mozillascience/PaperBadger,abought/PaperBadger,abought/PaperBadger,audy/PaperBadger,ORCID/PaperBadger,audy/PaperBadger,mozillascience/PaperBadger,acabunoc/PaperBadger,mozillascience/PaperBadger,acabunoc/PaperBadger,guahanweb/PaperBadger,aperala/PaperBadger,aperala/PaperBadger,ORCID/PaperBadger