Add README to MANIFEST/tests
Add README to MANIFEST/tests


Former-commit-id: 58e55460b9ccffefbe0262f962749d0c2787165e [formerly 41205e7d4142f1351331d0ccd0e0c11aa6a720ba]
Former-commit-id: 55f5b0e7891db01f6e0bb706c42596026d714ee3
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine