Add gem fury badge
Add gem fury badge

mzaccari/seed_migration,mzaccari/seed_migration,jmyers0022/seed_migration,harrystech/seed_migration,geoffharcourt/seed_migration,harrystech/seed_migration,jmyers0022/seed_migration,harrystech/seed_migration,mzaccari/seed_migration,geoffharcourt/seed_migration,geoffharcourt/seed_migration,jmyers0022/seed_migration