Fix time format RFC3339 in version arduino#283

Author: u5surf

Diff for: cli/version/version.go

@@ -20,6 +20,7 @@ package version
 import (
 	"fmt"
 	"os"
+	"time"
 
 	"github.com/arduino/arduino-cli/cli/globals"
 	"github.com/arduino/arduino-cli/cli/output"
@@ -41,5 +42,14 @@ func NewCommand() *cobra.Command {
 func run(cmd *cobra.Command, args []string) {
 	if output.JSONOrElse(globals.VersionInfo) {
 		fmt.Printf("%s\n", globals.VersionInfo)
+		res := &versionOutput{
+			Command:   cmd.Parent().Name(),
+			Version:   cli.VersionInfo.VersionString,
+			Commit:    cli.VersionInfo.Commit,
+			BuildDate: cli.VersionInfo.BuildDate.Format(time.RFC3339),
+		}
+		if cli.OutputJSONOrElse(res) {
+			fmt.Printf("%s\n", cli.VersionInfo)
+		}
 	}
 }