Added PHP 5.6 to travis.
Merge pull request #4 from h4cc/patch-1

Added PHP 5.6 to travis.
Added HHVM to travis.

In case supporting HHVM is a option.
Added HHVM support badge.
Merge pull request #5 from h4cc/patch-2

Added HHVM to travis.
Merge pull request #6 from h4cc/patch-3

Added HHVM support badge.
Merge remote-tracking branch 'origin/master' into return_object