added Readme to tests; changed directory structure; added recent test results;

Testing/Installation/testecmwfapi_member.py

Testing/Installation/testecmwfapi_public.py

Testing/Regression/Compare_gribfiles/README.md

Testing/Regression/Compare_gribfiles/test_cmp_grib_file.py

Testing/Regression/Mars_request/7.0.3/EA5.highres_mr.csv

Testing/Regression/Mars_request/7.0.3/EA5.public_mr.csv

Testing/Regression/Mars_request/7.0.3/EA5_mr.csv

Testing/Regression/Mars_request/7.1/CERA.public_mr.csv

Testing/Regression/Mars_request/7.1/CERA_mr.csv

Testing/Regression/Mars_request/7.1/CF_mr.csv

Testing/Regression/Mars_request/7.1/CV_mr.csv

Testing/Regression/Mars_request/7.1/EA5.highres_mr.csv

Testing/Regression/Mars_request/7.1/EA5.public_mr.csv

Testing/Regression/Mars_request/7.1/EA5_mr.csv

Testing/Regression/Mars_request/7.1/EI.public_mr.csv

Testing/Regression/Mars_request/7.1/EI_mr.csv

...ression/Mars_request/7.1/OD.ELDA.FC.eta.ens.double_mr.csv

Testing/Regression/Mars_request/7.1/OD.ENFO.CF_mr.csv

Testing/Regression/Mars_request/7.1/OD.ENFO.PF_mr.csv

...Regression/Mars_request/7.1/OD.OPER.4V.operational_mr.csv