local adapter timestamp for directories
Added support for creating directories with options.
bug fix to NullAdapter test, where the wrong method name was being used
Merge pull request #177 from hgraca/nullAdapterTestBugfix

bugfix to NullAdapter test, where the wrong method name was being used
Merge pull request #172 from hgraca/create_dir_with_options

Added support for creating directories with options.
Merge pull request #157 from kapitchi/local-adapter-timestamp

local adapter timestamp for directories
Fixed #171: Memcached returns false on not found, not null.
Merge branch 'master' of github.com:thephpleague/flysystem
Implemented HttpAdapter with guzzle