Run markdownlint tests with Bundler and Rake

Author: christopheradams

.travis.yml

@@ -6,8 +6,7 @@ rvm:
   - 2.3.0
 
 install:
-  - gem install mdl
+  - bundle install
 
 script:
-  - mdl --style 'markdown.rb' README.md
-  - mdl --style 'markdown.rb' CONTRIBUTING.md
+  - bundle exec rake test

CONTRIBUTING.md

@@ -20,10 +20,12 @@ formatting/markup/style rules so that the style remains consistent:
   alphabetical order at the end of the document, and capitalize the first word
   of the link label.
 
-Install [Markdownlint] to check your changes, and run:
+Use Ruby and [Markdownlint] to check your changes:
 
 ```sh
-mdl --style 'markdown.rb' README.md
+gem install bundler
+bundle install
+bundle exec rake test
 ```
 
 **IMPORTANT**: By submitting a patch, you agree that your work will be

Gemfile

@@ -0,0 +1,4 @@
+source "https://rubygems.org"
+
+gem "mdl"
+gem "rake"

Gemfile.lock

@@ -0,0 +1,21 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    kramdown (1.13.2)
+    mdl (0.4.0)
+      kramdown (~> 1.12, >= 1.12.0)
+      mixlib-cli (~> 1.7, >= 1.7.0)
+      mixlib-config (~> 2.2, >= 2.2.1)
+    mixlib-cli (1.7.0)
+    mixlib-config (2.2.4)
+    rake (12.0.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  mdl
+  rake
+
+BUNDLED WITH
+   1.14.5

Rakefile

@@ -0,0 +1,13 @@
+task :test do
+  exit_code = 0
+  files = ["README.md", "CONTRIBUTING.md"]
+  files.each do |file|
+    begin
+      sh "bundle exec mdl --style 'markdown.rb' #{file}"
+    rescue Exception => ex
+      exit_code = 1
+    end
+  end
+
+  exit exit_code
+end