Add basic opengraph metadata for sharing and add minimal schema.org markup
Add basic opengraph metadata for sharing and add minimal schema.org markup

avx2/avx2.github.io,wildebeestdev/grpc.github.io,avx2/avx2.github.io,wildebeestdev/grpc.github.io,wildebeestdev/grpc.github.io,avx2/avx2.github.io