Add additional meta data for crates.io.
Add additional meta data for crates.io.

libpnet/libpnet,symphorien/libpnet,david415/libpnet,mrmonday/libpnet,mrmonday/libpnet,little-dude/libpnet,returntoreality/libpnet,symphorien/libpnet,little-dude/libpnet,fsck/libpnet,returntoreality/libpnet,tempbottle/libpnet,mrmonday/libpnet,tempbottle/libpnet,libpnet/libpnet,tempbottle/libpnet,tempbottle/libpnet,mrmonday/libpnet,little-dude/libpnet,returntoreality/libpnet,fsck/libpnet,david415/libpnet,fsck/libpnet,symphorien/libpnet,little-dude/libpnet,david415/libpnet,fsck/libpnet,libpnet/libpnet,david415/libpnet,libpnet/libpnet,symphorien/libpnet,returntoreality/libpnet