Extract file for version command

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

cmd/version.go

@@ -0,0 +1,30 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/alexellis/faasd/pkg"
+	"github.com/morikuni/aec"
+	"github.com/spf13/cobra"
+)
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Display version information.",
+	Run:   parseBaseCommand,
+}
+
+func parseBaseCommand(_ *cobra.Command, _ []string) {
+	printLogo()
+
+	fmt.Printf(
+		`faasd
+Commit: %s
+Version: %s
+`, pkg.GitCommit, pkg.GetVersion())
+}
+
+func printLogo() {
+	logoText := aec.WhiteF.Apply(pkg.Logo)
+	fmt.Println(logoText)
+}