Recursion did not fully work on Dropbox Adapter
Merge pull request #179 from sdousley/master

Recursion did not fully work on Dropbox Adapter
Added stream and update functions to File handler
Update composer.json
Removed 5.3 from travis
Merge pull request #180 from GrahamCampbell/patch-1

Update composer.json
Ensure Local has checks weather it's a file, not a directory
Merge branch 'master' of github.com:thephpleague/flysystem
Implemented HttpAdapter with guzzle