Clarify interaction between NodeExpandVolume and OFFLINE capability

Merge pull request container-storage-interface#353 from msolefonte/fi…

…x/zone-correction

Fix a mistake in spec.md

Merge pull request container-storage-interface#335 from bswartz/clari…

…fy-target-staging-paths

Clarify staging and target paths for blocks

Merge pull request container-storage-interface#336 from container-sto…

…rage-interface/master

Cherry pick changes for 1.0.0 from master

Merge pull request container-storage-interface#333 from container-sto…

…rage-interface/master

Cherrypick changes from master to 1.0.0

Merge pull request container-storage-interface#325 from saad-ali/fixM…

…ayMust

Scrub spec for "should", "must", etc. and capitalize

CSI spec v0.3.0 release

CSI spec v0.3.0 release candidate 1

fix figure order in Volume Lifecycle

fix figure order in Volume Lifecycle