added composer.json and updated phpunit.xml

[xaoseric]

[Arantor]

This repo hasn't been in use for a year, and is unlikely to ever be used in future.

[xaoseric]

@Arantor at least let me work on smCore, and when it's ready, consider using it.

[XinYenFon]

@xaoseric even our developers don't want to use smCore now or in future, none can block your works on smCore, yes its likely our developers don't accept your PRs and merge them into smCore or even they decide to delete this repo... But still you can fork this (which you already did) and release smCore under different name and with proper permissions and stuff (like copyright etc...).

[Arantor]

If I have anything to do with it, smCore will NEVER be used officially. I have long believed it was a mistake to ever consider completely starting from scratch instead of working with a proven code base.