Move deps from _workspace/ to vendor/

godep restore
pushd $GOPATH/src/github.com/appc/spec
git co master
popd
go get go4.org/errorutil
rm -rf Godeps
godep save ./...
git add vendor
git add -f $(git ls-files --other vendor/)
git co -- Godeps/LICENSES Godeps/.license_file_state Godeps/OWNERS

vendor/github.com/docker/engine-api/client/volume_remove.go

@@ -0,0 +1,10 @@
+package client
+
+import "golang.org/x/net/context"
+
+// VolumeRemove removes a volume from the docker host.
+func (cli *Client) VolumeRemove(ctx context.Context, volumeID string) error {
+	resp, err := cli.delete(ctx, "/volumes/"+volumeID, nil, nil)
+	ensureReaderClosed(resp)
+	return err
+}