Update Changelog and Readme to 4.1.0

CHANGELOG.md

@@ -3,6 +3,12 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [4.1.0] 2016-08-05
+Due to Coursera's platform changes, we had the following updates:
+### Fixed
+- Section: **Big Data**
+  - Introduction to Big Data
+
 ## [4.0.0] 2016-07-30
 Due to Coursera's platform changes, we had the following updates:
 

README.md

@@ -393,7 +393,7 @@ The **only things** that you need to know are how to use **Git** and **GitHub**.
 
 ## Change Log
 
-**Curriculum Version**: `4.0.0`
+**Curriculum Version**: `4.1.0`
 
 To show **respect** to all of our students, we will keep a [CHANGELOG](CHANGELOG.md) file that contains all the alterations that our curriculum may suffer.