Include testing.

Testing is disabled on the master because travis is banjaxed. Keeping this branch to check in on it every now and then.
Update travis badge for this branch.
Pre-merge checkin.
Merge branch 'master' of https://github.com/iosdevzone/IDZSwiftCommonCrypto
Reenable testing on Travis.
Reenable testing now that https://github.com/travis-ci/travis-ci/issues/2829 seems resolved.