Adds release date replacement (closes #103)

[micheleorselli]

As mentioned in #103 it would be nice to specify a release date a la composer. The placeholder name is datetime but maybe releasedatecould be more meaningful.

As of now the output is a string like 2015-10-28 10:34:23

[micheleorselli]

@kherge any feedback on this? Thanks!

[kherge]

At the moment, the configuration setting can be accepted by Box but it will not actually do anything. There is a function called getProcessedReplacements() that gathers all of the special placeholder names for actual processing. If you added it after line 828 and update the replacement test I can merge the PR.

[micheleorselli]

Sure, I'll try to update the PR asap. Are you happy using datetime as placeholder name?

[kherge]

I think you mean the name of the configuration setting? I'm okay with that.

[micheleorselli]

@kherge done, let me know if is ok now

[kherge]

This looks good and I'm ready to merge it, but I just had an idea.

Would it be useful to be able to specify the date format instead of hardcoding it?

[micheleorselli]

Makes sense to me though the actual format is quite generic and I guess it will be fine for a lot of users.
Anyway implementing this feature should be pretty straightforward: adding another configuration key like datetime_format which accepts a PHP date format will do the job.

I can add it to this PR is you like

[kherge]

If you don't mind doing so I would really appreciate it!

[micheleorselli]

@kherge done

[kherge]

I forgot to mention that the JSON validation schema needs to be updated, but I took care of that.

Thanks for your help!

Version 2.6.0 is now live.

[micheleorselli]

Glad to be useful, thank you for your time :-)