Add instructions for installing and running badgecheck with flask server (note: pip install is future-looking, doesn't yet work, but will following an update after this package name is finalized and pushed to pypi.
Add instructions for installing and running badgecheck with flask server (note: pip install is future-looking, doesn't yet work, but will following an update after this package name is finalized and pushed to pypi.

concentricsky/badgecheck,IMSGlobal/openbadges-validator-core,openbadges/badgecheck,IMSGlobal/openbadges-validator-core,concentricsky/badgecheck,openbadges/badgecheck