New support for ACI storage and OSS

Dockyard 0.5.0 is an incremental release with new features,bug fixes and new support for Go 1.5.3.

New features

• New support for ACI storage,support rkt fetch&push ACIs from Dockyard,adapt to rkt and acpush client.
• New support for OSS that is a distributed replicated object store.See OSS documentation.

Bug fixes

• Fix and update the system test case.
• Fix V2 protocol bug.

Add Notifications Middleware

0.4.2

Merge branch 'master' of github.com:containerops/dockyard

Fix function break when run in HTTP

• Fix function break when run in HTTP mode.
• Add test codes.

Release 0.4.0

A pure container image host system without UI, support Docker Registry V1 and V2.