Merge pull request #8 from getlantern/master

Switched to using rundll32 with FileProtocolHandler to avoid flashing shell window

open/exec_windows.go

@@ -3,17 +3,24 @@
 package open
 
 import (
+	"os"
 	"os/exec"
+	"path/filepath"
 	"strings"
 )
 
+var (
+	cmd       = "url.dll,FileProtocolHandler"
+	runDll32  = filepath.Join(os.Getenv("SYSTEMROOT"), "System32", "rundll32.exe")
+)
+
 func cleaninput(input string) string {
 	r := strings.NewReplacer("&", "^&")
 	return r.Replace(input)
 }
 
 func open(input string) *exec.Cmd {
-	return exec.Command("cmd", "/C", "start", "", cleaninput(input))
+	return exec.Command(runDll32, cmd, input)
 }
 
 func openWith(input string, appName string) *exec.Cmd {