Gitignored .idea.
Gitignored /vendor
Added phpunit as dev dependency.
Added composer.lock.
Added manual-tests/test-infobip.php
InfobipGateway: use API v3 with explicit datacoding.
Merge pull request #4 from xi-project/infobip-v3

Infobip v3
Lockfile doesnt belong to repo
Merge remote-tracking branch 'origin/master' into ipx-gateway