gh-533 - Updated README.md with Travis CI badge.
gh-533 - Updated README.md with Travis CI badge.

GovernmentCommunicationsHeadquarters/Gaffer,gchq/Gaffer,gchq/Gaffer,gchq/Gaffer,GovernmentCommunicationsHeadquarters/Gaffer,GovernmentCommunicationsHeadquarters/Gaffer,GovernmentCommunicationsHeadquarters/Gaffer,gchq/Gaffer