Add production dependencies

node_modules/gulp-uglify/lib/log.js

@@ -0,0 +1,15 @@
+'use strict';
+var hasLog = require('has-gulplog');
+var each = require('array-each');
+
+var levels = ['debug', 'info', 'warn', 'error'];
+
+each(levels, function(level) {
+  module.exports[level] = function() {
+    if (hasLog()) {
+      var log = require('gulplog');
+
+      log[level].apply(log, arguments);
+    }
+  };
+});