Consolidate the files in client/

Signed-off-by: Daniel Nephin <dnephin@docker.com>

usage_test.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"sort"
+	"testing"
+
+	"github.com/docker/docker/cli"
+)
+
+// Tests if the subcommands of docker are sorted
+func TestDockerSubcommandsAreSorted(t *testing.T) {
+	if !sort.IsSorted(byName(cli.DockerCommandUsage)) {
+		t.Fatal("Docker subcommands are not in sorted order")
+	}
+}