Install normalize.css via yarn

lib/suspenders/generators/stylesheet_base_generator.rb

@@ -33,5 +33,9 @@ def install_refills
     def install_bitters
       run "bitters install --path app/assets/stylesheets"
     end
+
+    def install_normalize_css
+      run "bin/yarn add normalize.css"
+    end
   end
 end

spec/features/new_project_spec.rb

@@ -273,7 +273,9 @@ def app_name
     expect(read_project_file(flashes_path)).to match(/\$flashes/m)
 
     app_css = read_project_file(%w(app assets stylesheets application.scss))
-    expect(app_css).to match(/normalize-css.*bourbon.*neat.*base.*refills/m)
+    expect(app_css).to match(
+      /normalize\.css\/normalize\.css.*bourbon.*neat.*base.*refills/m,
+    )
   end
 
   it "doesn't use turbolinks" do

templates/Gemfile.erb

@@ -16,7 +16,6 @@ gem "pg"
 gem "puma"
 gem "rack-canonical-host"
 gem "rails", "<%= Suspenders::RAILS_VERSION %>"
-gem "rails-assets-normalize-css", source: "https://rails-assets.org"
 gem "recipient_interceptor"
 gem "sass-rails", "~> 5.0"
 gem "simple_form"

templates/application.scss

@@ -1,6 +1,6 @@
 @charset "utf-8";
 
-@import "normalize-css";
+@import "normalize.css/normalize.css";
 
 @import "bourbon";
 @import "neat";