Merge pull request #519 from hleeldc/cloud-storage

Minor updates in cloud storage

version 1.1.0

restructuring + user index class

Merge pull request #416 from hleeldc/cloud-storage-cache

add initialization param to GoogleDriveStorage

Merge pull request #405 from hleeldc/gd-share-from-server

merged: Cloud-Server-1.0.0

make GoogleAuth.getAccessToken refresh token automatically

Merge pull request #397 from hleeldc/gd-import-shared-files

Cloud-storage-0.7.0

Merge pull request #390 from hleeldc/gd_share2

cloud-storage-0.5.0

cloud storage 0.4.0

index server v1.0.1