added version information

internal/app/wwctl/version/main.go

@@ -0,0 +1,16 @@
+package version
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+var Version = "development"
+
+func CobraRunE(cmd *cobra.Command, args []string) error {
+
+	fmt.Println("Version foo:\t", Version)
+
+	return nil
+}