Prepare version 0.3.1 (brefphp#42)

* Prepare version 0.3.1

* typos

Prepare release 0.3.0 (brefphp#30)

* Prepare release 0.3.0

* Removed debug code

* Added link to docker hub

* Change order in Travis to optimize total build time

Deploy new layer versions (brefphp#20)

typos

Travis config and CS fixes (brefphp#1)

* Adding blackfire and xdebug

* updates

* Create nice folded reports

* Use before install

* cleanup

* Syntax fixes

* Use minimal travis image

* CS fixes

* cs