Fixed dateWith() issue with day.

AFDateHelper.podspec

@@ -9,7 +9,7 @@
 
 Pod::Spec.new do |s|
   s.name             = "AFDateHelper"
-  s.version          = "4.0.0"
+  s.version          = "4.0.1"
   s.summary          = "Date Extension for Swift 3.0"
   s.description      = <<-DESC
                        A Swift Date extension for creating, modifying and comparing dates.

README.md

@@ -16,7 +16,7 @@ Swift 3
 ## Installation
 
 **Carthage** github "melvitax/DateHelper"  
-**Cocoapods** pod 'AFDateHelper', '~> 4.0'  
+**Cocoapods** pod 'AFDateHelper', '~> 4.0.1'  
 **Manually**  Include DateHelper.swift in your project
 
 ## Usage

Sources/DateHelper.swift

@@ -1,7 +1,7 @@
 //
 //  AFDateHelper.swift
-//
-//  Version 4.0.0
+//  https://github.com/melvitax/DateHelper
+//  Version 4.0.1
 //
 //  Created by Melvin Rivera on 7/15/14.
 //  Copyright (c) 2014. All rights reserved.
@@ -373,7 +373,7 @@ public extension Date {
     func dateWith(hour: Int?, minute: Int?, second: Int?, day: Int? = nil, month: Int? = nil) -> Date {
         var comp = Date.components(self)
         comp.month = month ?? comp.month
-        comp.day = day ?? comp.weekday
+        comp.day = day ?? comp.day
         comp.hour = hour ?? comp.hour
         comp.minute = minute ?? comp.minute
         comp.second = second ?? comp.second