upgrade d3js to v4.1.0

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 4.1.0 (7 July 2016)
+* Upgrade D3 to 4.1.0
+* Keep D3.v3 at 3.5.17
+
 ## 3.5.17 (3 July 2016)
 * Upgrade D3 to 3.5.17
 

README.md

@@ -8,7 +8,7 @@ d3-rails provides D3 for Rails 3.1 and higher.
 
 ## Version
 
-d3-rails comes with version 3.5.17 of D3.js. The d3-rails version will
+d3-rails comes with version 4.1.0 of D3.js. The d3-rails version will
 always mirror the version of D3. If you need a newer version of
 d3-rails, see section Development (below).
 

Rakefile

@@ -4,10 +4,10 @@ Bundler::GemHelper.install_tasks
 namespace :d3 do
   desc 'Update d3 version'
   task :update_version do
-    `curl -o app/assets/javascripts/d3.js https://raw.githubusercontent.com/mbostock/d3/master/d3.js`
-    `curl -o app/assets/javascripts/d3.min.js https://raw.githubusercontent.com/mbostock/d3/master/d3.min.js`
-    `cp app/assets/javascripts/d3.js app/assets/javascripts/d3.v3.js`
-    `cp app/assets/javascripts/d3.min.js app/assets/javascripts/d3.v3.min.js`
+    `curl -o app/assets/javascripts/d3.js https://d3js.org/d3.v4.js`
+    `curl -o app/assets/javascripts/d3.min.js https://d3js.org/d3.v4.min.js`
+    `cp app/assets/javascripts/d3.js app/assets/javascripts/d3.v4.js`
+    `cp app/assets/javascripts/d3.min.js app/assets/javascripts/d3.v4.min.js`
     version = `grep 'version: ".*"' app/assets/javascripts/d3.js | cut -d '"' -f 2`.strip
     message = <<-MSG
       Please update the version to #{version} manually in the following files: