Clarify about "Java Server Application" in README

[ngocdaothanh]

I've read the section "Java Server Application" in README, but I still don't know how to tell sbt-native-packager to start my Java app at boot time.

Is this feature finished, or currently it's just a planned feature?

[jsuereth]

It's a planned feature. It is only implemented for Ubuntu using upstart right now. What platform are you on? We could try to add support for your platform next, depending.

[ngocdaothanh]

I use CentOS.

[jsuereth]

Great. So you need RPM + init.d support? Could you open an enhancement ticket requesting that? Providing any additional detail of requirements would be great too. I'm about 4 years out of date with CentOS. My RPM knowledge comes from bundling apps in CentOS 4.2+. I'm not quite up-to-date on where they stand now :)

[ngocdaothanh]

Thanks. I've added #70.