Update readme according to go doc

README.md

@@ -67,14 +67,12 @@ import (
  	"github.com/posener/complete/v2"
  	"github.com/posener/complete/v2/predict"
  )
-
  var (
  	// Add variables to the program.
  	name      = flag.String("name", "", "")
  	something = flag.String("something", "", "")
  	nothing   = flag.String("nothing", "", "")
  )
-
  func main() {
  	// Create the complete command.
  	// Here we define completion values for each flag.
@@ -105,7 +103,6 @@ To use this feature, simply call `complete.CommandLine` before `flag.Parse`. (Se
  	// Define flags here...
  	foo = flag.Bool("foo", false, "")
  )
-
  func main() {
  	// Call command line completion before parsing the flags - provide it with the binary name.
 +	complete.CommandLine("my-program")
@@ -129,7 +126,6 @@ flag with values, it is possible to use the `github.com/posener/complete/compfla
 -	foo = flag.Bool("foo", false, "")
 +	foo = compflag.Bool("foo", false, "")
  )
-
  func main() {
  	// Call command line completion before parsing the flags.
 +	complete.CommandLine("my-program")