gemspec: Jarfile: update to latest Kill Bill API

Signed-off-by: Pierre-Alexandre Meyer <pierre@ning.com>
api: refactor initialization sequence

* Use the new @conf_dir parameter to locate the configuration file
* Add password parameter to configuration file
* Add some logging on startup/shutdown

Signed-off-by: Pierre-Alexandre Meyer <pierre@ning.com>
.gitignore: ignore .DS_Store files

Signed-off-by: Pierre-Alexandre Meyer <pierre@ning.com>
build: add release script

See https://github.com/killbill/killbill-logging-plugin/wiki/Killbill-Logging-plugin-Release.

Signed-off-by: Pierre-Alexandre Meyer <pierre@ning.com>
spec: fix tests failures

Signed-off-by: Pierre-Alexandre Meyer <pierre@ning.com>
Merge branch 'master' of github.com:killbill/killbill-logging-plugin