Added version release changes.

CHANGES.md

@@ -1,3 +1,10 @@
+# v4.0.0 (2018-01-01)
+
+- Added Gemfile.lock to .gitignore.
+- Updated to Apache 2.0 license.
+- Updated to Ruby 2.4.3.
+- Updated to Ruby 2.5.0.
+
 # v3.1.0 (2017-11-26)
 
 - Updated Gemfile.lock file.

Gemfile

@@ -3,4 +3,4 @@
 source "https://rubygems.org"
 
 gem "rake", "~> 12.0"
-gem "git-cop", "~> 1.7"
+gem "git-cop", "~> 2.0"

README.md

@@ -14,9 +14,9 @@ the two projects are meant to be used:
 
 - **macOS** (this project) - Foundation and framework for building customizated macOS machine
   setups.
-- **[macOS Config](https://github.com/bkuhlmann/mac_os-config)** - The layer on top of this *macOS*
-  project which defines a custom machine setup and base implementation. The project is meant to be
-  forked for as many custom machine setups as needed.
+- **[macOS Configuration](https://github.com/bkuhlmann/mac_os-config)** - The layer on top of this
+  *macOS* project which defines a custom machine setup and base implementation. The project is meant
+  to be forked for as many custom machine setups as needed.
 
 <!-- Tocer[start]: Auto-generated, don't remove. -->
 
@@ -74,7 +74,7 @@ Current Version (stable):
 
     git clone https://github.com/bkuhlmann/mac_os.git
     cd mac_os
-    git checkout v3.1.0
+    git checkout v4.0.0
 
 Master Version (unstable):