Merge upstream/master
Merge remote-tracking branch 'upstream/master'
Implemented Atoum plugin as a 'native' plugin:
- allow atoum bin to be called directly into PHPCI and not only in the current project tested (changed -d option),
- added plugin in the phpci's composer.json,
- modify execute method of the plugin because atoum always return 0 even if errors are catched,
Merge remote-tracking branch 'upstream/master'

Conflicts:
	composer.json
Cleaned coding style
restored chmod
restored chmod
Added Gitlab support
Merge remote-tracking branch 'upstream/master'
Allow atoum to be called from the tested project if executable option is set.
Improve errors catching
Merge pull request #124 from c2is/master

Atoum Plugin improvements and implementation