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diff --git a/node_modules/archiver-utils/index.js b/node_modules/archiver-utils/index.js
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+/**
+ * archiver-utils
+ *
+ * Copyright (c) 2015 Chris Talkington.
+ * Licensed under the MIT license.
+ * https://github.com/archiverjs/archiver-utils/blob/master/LICENSE
+ */
+var fs = require('graceful-fs');
+var path = require('path');
+var nutil = require('util');
+var lazystream = require('lazystream');
+var normalizePath = require('normalize-path');
+var _ = require('lodash');
+
+var Stream = require('stream').Stream;
+var PassThrough = require('readable-stream').PassThrough;
+
+var utils = module.exports = {};
+utils.file = require('./file.js');
+
+function assertPath(path) {
+  if (typeof path !== 'string') {
+    throw new TypeError('Path must be a string. Received ' + nutils.inspect(path));
+  }
+}
+
+utils.collectStream = function(source, callback) {
+  var collection = [];
+  var size = 0;
+
+  source.on('error', callback);
+
+  source.on('data', function(chunk) {
+    collection.push(chunk);
+    size += chunk.length;
+  });
+
+  source.on('end', function() {
+    var buf = new Buffer(size);
+    var offset = 0;
+
+    collection.forEach(function(data) {
+      data.copy(buf, offset);
+      offset += data.length;
+    });
+
+    callback(null, buf);
+  });
+};
+
+utils.dateify = function(dateish) {
+  dateish = dateish || new Date();
+
+  if (dateish instanceof Date) {
+    dateish = dateish;
+  } else if (typeof dateish === 'string') {
+    dateish = new Date(dateish);
+  } else {
+    dateish = new Date();
+  }
+
+  return dateish;
+};
+
+// this is slightly different from lodash version
+utils.defaults = function(object, source, guard) {
+  var args = arguments;
+  args[0] = args[0] || {};
+
+  return _.defaults.apply(_, args);
+};
+
+utils.isStream = function(source) {
+  return source instanceof Stream;
+};
+
+utils.lazyReadStream = function(filepath) {
+  return new lazystream.Readable(function() {
+    return fs.createReadStream(filepath);
+  });
+};
+
+utils.normalizeInputSource = function(source) {
+  if (source === null) {
+    return new Buffer(0);
+  } else if (typeof source === 'string') {
+    return new Buffer(source);
+  } else if (utils.isStream(source) && !source._readableState) {
+    var normalized = new PassThrough();
+    source.pipe(normalized);
+
+    return normalized;
+  }
+
+  return source;
+};
+
+utils.sanitizePath = function(filepath) {
+  return normalizePath(filepath, false).replace(/^\w+:/, '').replace(/^(\.\.\/|\/)+/, '');
+};
+
+utils.trailingSlashIt = function(str) {
+  return str.slice(-1) !== '/' ? str + '/' : str;
+};
+
+utils.unixifyPath = function(filepath) {
+  return normalizePath(filepath, false).replace(/^\w+:/, '');
+};
+
+utils.walkdir = function(dirpath, base, callback) {
+  var results = [];
+
+  if (typeof base === 'function') {
+    callback = base;
+    base = dirpath;
+  }
+
+  fs.readdir(dirpath, function(err, list) {
+    var i = 0;
+    var file;
+    var filepath;
+
+    if (err) {
+      return callback(err);
+    }
+
+    (function next() {
+      file = list[i++];
+
+      if (!file) {
+        return callback(null, results);
+      }
+
+      filepath = path.join(dirpath, file);
+
+      fs.stat(filepath, function(err, stats) {
+        results.push({
+          path: filepath,
+          relative: path.relative(base, filepath).replace(/\\/g, '/'),
+          stats: stats
+        });
+
+        if (stats && stats.isDirectory()) {
+          utils.walkdir(filepath, base, function(err, res) {
+            res.forEach(function(dirEntry) {
+              results.push(dirEntry);
+            });
+            next();
+          });
+        } else {
+          next();
+        }
+      });
+    })();
+  });
+};