Merge pull request #2 from wagnert/master

Refactoring for new appserver-io/build package
Update README.md
testing local exclusion for phpcpd
removing pre-push hook enforcement
cleared phpcs and phpcpd problems
updated changelog
Merge branch 'master' of https://github.com/techdivision/php-by-contract
updated version number
Merge pull request #4 from wick-ed/master

cleared phpcs and phpcpd problems + cleanup