util.isArray exception fix required.

[Gicehajunior]

Hi! 👋

Firstly, thanks for your work on this project! 🙂

Today I used patch-package to patch connect-flash@0.1.1 for the project I'm working on.

Here is the diff that solved my problem:

diff --git a/node_modules/connect-flash/lib/flash.js b/node_modules/connect-flash/lib/flash.js
index a278bc1..0175ab5 100644
--- a/node_modules/connect-flash/lib/flash.js
+++ b/node_modules/connect-flash/lib/flash.js
@@ -2,8 +2,6 @@
  * Module dependencies.
  */
 var format = require('util').format; 
-var isArray = require('util').isArray;
-
 
 /**
  * Expose `flash()` function on requests.
@@ -64,7 +62,7 @@ function _flash(type, msg) {
     if (arguments.length > 2 && format) {
       var args = Array.prototype.slice.call(arguments, 1);
       msg = format.apply(undefined, args);
-    } else if (isArray(msg)) {
+    } else if (Array.isArray(msg)) {
       msg.forEach(function(val){
         (msgs[type] = msgs[type] || []).push(val);
       });

This issue body was partially generated by patch-package.