Add production dependencies

node_modules/gulp-git/lib/checkoutFiles.js

@@ -0,0 +1,29 @@
+'use strict';
+
+var through = require('through2');
+var log = require('fancy-log');
+var exec = require('child_process').exec;
+var escape = require('any-shell-escape');
+
+module.exports = function (opt) {
+  if (!opt) opt = {};
+  if (!opt.args) opt.args = ' ';
+
+  function checkout(file, enc, cb) {
+    var that = this;
+    var cmd = 'git checkout ' + opt.args + ' ' + escape([file.path]);
+    if (!cb || typeof cb !== 'function') cb = function () {};
+
+    var maxBuffer = opt.maxBuffer || 200 * 1024;
+
+    exec(cmd, {cwd: file.cwd, maxBuffer: maxBuffer}, function(err, stdout, stderr) {
+      if (err) return cb(err);
+      if (!opt.quiet) log(stdout, stderr);
+      that.push(file);
+      cb(null);
+    });
+  }
+
+  // Return a stream
+  return through.obj(checkout);
+};