Releasing gosdk with thumbnail support for zbox

v1.0.8

fix the cancel download key to reflect the file being downloaded from…

v1.0.7

• Update authentication codeflow.

v1.0.6

Update transaction.go

v1.0.5

• Update documentation
• Add multi-platform support

GOSDK - CLI

• Add support for installing herumi and its dependencies.
• Add sample program called sdkver to display the GOSDK version.

Refactor GOSDK - Enable open access.

v1.0.3

Push version v1.0.3

v1.0.2

Refactor clientsdk