[Sf2SK] Added dev version of parameters.yml
[Sf2SK] Added CI setup files
[Sf2SK] Added travis config file.
[Sf2SK] Added CircleCI config file
[Sf2SK] Updated README.md to reflect usage of Symfony Standard Edition 2.5.6
[Sf2SK] Updated default password in parameters.yml.dist
[Sf2SK] Added PHPMessDetector && PHP CodeSniffer (with configs)