Update README with instructions for running iso-seg tests
Update README with instructions for running iso-seg tests

Signed-off-by: Jonathan Berkhahn <8cee8fadf1c8e6e3ca6f5e7d5617d96aa76b918c@us.ibm.com>

cloudfoundry/cf-smoke-tests,cloudfoundry/cf-smoke-tests,cloudfoundry/cf-smoke-tests,cloudfoundry/cf-smoke-tests