Update REAME to reflect 2.4 support.
Update REAME to reflect 2.4 support.

bethesque/pact_broker,tancnle/pact_broker,tancnle/pact_broker,pact-foundation/pact_broker,tancnle/pact_broker,bethesque/pact_broker,bethesque/pact_broker,pact-foundation/pact_broker,pact-foundation/pact_broker,bethesque/pact_broker,tancnle/pact_broker,pact-foundation/pact_broker