ADD description for ngsiv1_vs_ngsi2.jmx script in README.md
ADD description for ngsiv1_vs_ngsi2.jmx script in README.md

telefonicaid/fiware-orion,telefonicaid/fiware-orion,McMutton/fiware-orion,telefonicaid/fiware-orion,Fiware/data.Orion,McMutton/fiware-orion,Fiware/data.Orion,Fiware/data.Orion,McMutton/fiware-orion,telefonicaid/fiware-orion,telefonicaid/fiware-orion,McMutton/fiware-orion,McMutton/fiware-orion,telefonicaid/fiware-orion,Fiware/data.Orion,McMutton/fiware-orion,Fiware/data.Orion,Fiware/data.Orion,McMutton/fiware-orion