Add kpod version

Signed-off-by: umohnani8 <umohnani@redhat.com>

cmd/kpod/main.go

@@ -7,14 +7,18 @@ import (
 	"github.com/urfave/cli"
 )
 
+//Version of kpod
+const Version string = "0.0.1"
+
 func main() {
 	app := cli.NewApp()
 	app.Name = "kpod"
 	app.Usage = "manage pods and images"
-	app.Version = "0.0.1"
+	app.Version = Version
 
 	app.Commands = []cli.Command{
 		launchCommand,
+		versionCommand,
 	}
 
 	if err := app.Run(os.Args); err != nil {

cmd/kpod/version.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"fmt"
+	"runtime"
+	"strconv"
+	"time"
+
+	"github.com/urfave/cli"
+)
+
+// Overwritten at build time
+var (
+	gitCommit string
+	buildInfo string
+)
+
+// versionCmd gets and prints version info for version command
+func versionCmd(c *cli.Context) error {
+
+	// Converts unix time from string to int64
+	buildTime, err := strconv.ParseInt(buildInfo, 10, 64)
+	if err != nil {
+		return err
+	}
+
+	fmt.Println("Version:      ", Version)
+	fmt.Println("Go Version:   ", runtime.Version())
+	fmt.Println("Git Commit:   ", gitCommit)
+
+	// Prints out the build time in readable format
+	fmt.Println("Built:        ", time.Unix(buildTime, 0).Format(time.ANSIC))
+	fmt.Println("OS/Arch:      ", runtime.GOOS+"/"+runtime.GOARCH)
+
+	return nil
+}
+
+// Cli command to print out the full version of kpod
+var versionCommand = cli.Command{
+	Name:   "version",
+	Usage:  "Display the KPOD Version Information",
+	Action: versionCmd,
+}