update main to run parser

main.go

@@ -4,11 +4,12 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/brettlangdon/gython/parser"
 	"github.com/brettlangdon/gython/scanner"
 	"github.com/brettlangdon/gython/token"
 )
 
-func main() {
+func tokenize() {
 	tokenizer := scanner.NewScanner(os.Stdin)
 	for {
 		tok := tokenizer.NextToken()
@@ -20,3 +21,8 @@ func main() {
 		}
 	}
 }
+
+func main() {
+	root := parser.ParseReader(os.Stdin)
+	fmt.Println(root)
+}