Merge pull request #28 from jeromegamez/feature/symfony3

Allow Symfony 3 dependencies

Merge pull request #26 from raulfraile/feature/php7

Feature/php7

Merge pull request #16 from mcuadros/master

Method/Native/TarExtractor: handling files in dirs

Improved docs for exceptions

Cpio method does not uncompress tar files in all platforms

Throw proper exceptions

Updated docs

Uncompress bz2 files using the bzip2 extension

Added support for CPIO

Minor fixes