[update] do not check version support at update

currently we check and report unsupported versions even during
  `parse update`
this diff checks against that. since operation is not needed

Author: pavanka

commands.go

@@ -8,7 +8,7 @@ import (
 	"github.com/spf13/cobra"
 )
 
-func parseRootCmd(e *env) *cobra.Command {
+func parseRootCmd(e *env) ([]string, *cobra.Command) {
 	c := &cobra.Command{
 		Use: "parse",
 		Long: fmt.Sprintf(
@@ -45,7 +45,7 @@ http://parse.com`,
 	c.AddCommand(newVersionCmd(e))
 
 	if len(os.Args) <= 1 {
-		return c
+		return nil, c
 	}
 
 	commands := []string{"help"}
@@ -61,5 +61,5 @@ http://parse.com`,
 	}
 	c.SetArgs(args)
 
-	return c
+	return args, c
 }

main.go

@@ -100,19 +100,24 @@ func main() {
 	}
 	e.ParseAPIClient = apiClient
 
-	var rootCmd *cobra.Command
+	var (
+		rootCmd *cobra.Command
+		command []string
+	)
 	switch e.Type {
 	case legacyParseFormat, parseFormat:
-		rootCmd = parseRootCmd(&e)
+		command, rootCmd = parseRootCmd(&e)
 	}
 
-	message, err := checkIfSupported(&e, version, os.Args[1:]...)
-	if err != nil {
-		fmt.Fprintln(e.Err, err)
-		os.Exit(1)
-	}
-	if message != "" {
-		fmt.Fprintln(e.Err, message)
+	if len(command) == 0 || command[0] != "update" {
+		message, err := checkIfSupported(&e, version, command...)
+		if err != nil {
+			fmt.Fprintln(e.Err, err)
+			os.Exit(1)
+		}
+		if message != "" {
+			fmt.Fprintln(e.Err, message)
+		}
 	}
 
 	if err := rootCmd.Execute(); err != nil {