Added PHP 5.6 to travis.
Merge pull request #31 from h4cc/patch-1

Added PHP 5.6 to travis.
remove unnecessary pecl redis setup
fix hhvm build
fix typo
Merge pull request #36 from deeky666/fix-travis

Fix travis build
Fixed CacheProvider documentation
Merge pull request #37 from BenMorel/master

Fixed CacheProvider documentation
Removing default `= null` from properties

See feedback on doctrine/cache#37
Remove dead config
Remove unused var
Remove not needed stuff from PHPUnit bootstrap
Merge pull request #42 from JeroenDeDauw/tests

Remove not needed stuff from PHPUnit bootstrap
Merge pull request #39 from JeroenDeDauw/var

Remove unused var
Merge pull request #40 from JeroenDeDauw/config

Remove dead config
Fixed the creation of the cache directory in case of a race condition.
Fixed race condition when writing  cache on disk
Removed workaround for PHP 5.2
Made diff easier to read
Removed unneeded attribution notices
#38 - applying minor whitespace-based CS fixes