use directories for structure

node_modules/is-glob/index.js

@@ -0,0 +1,25 @@
+/*!
+ * is-glob <https://github.com/jonschlinkert/is-glob>
+ *
+ * Copyright (c) 2014-2016, Jon Schlinkert.
+ * Licensed under the MIT License.
+ */
+
+var isExtglob = require('is-extglob');
+
+module.exports = function isGlob(str) {
+  if (typeof str !== 'string' || str === '') {
+    return false;
+  }
+
+  if (isExtglob(str)) return true;
+
+  var regex = /(\\).|([*?]|\[.*\]|\{.*\}|\(.*\|.*\)|^!)/;
+  var match;
+
+  while ((match = regex.exec(str))) {
+    if (match[2]) return true;
+    str = str.slice(match.index + match[0].length);
+  }
+  return false;
+};