Add -h and --help options

diff --git a/tweeper.php b/tweeper.php
index a019684..3b8fb2d 100755 (executable)
--- a/tweeper.php
+++ b/tweeper.php
@@ -92,6 +92,10 @@ function usage($argv)
 if (isset($_GET['src_url'])) {
   $src_url = $_GET['src_url'];
 } else if (isset($argv[1])) {
+  if ($argv[1] == "-h" || $argv[1] == "--help") {
+    echo usage($argv);
+    return 0;
+  }
   $src_url = $argv[1];
 } else {
   die(usage($argv));