Add examples:seed Rake task.

I got tired of trying to do a make-shift system like this, so I threw
together a little Rake task to do it for me. This task will clone some
git repos for gems that have YARD docs and then run sord and generate
the rbi files for each.

This also includes an examples:reset Rake task to delete the
sord_examples directory.

Author: connorshea

.gitignore

@@ -11,3 +11,5 @@
 .rspec_status
 .vscode/
 Gemfile.lock
+
+sord_examples/

Rakefile

@@ -4,3 +4,56 @@ require "rspec/core/rake_task"
 RSpec::Core::RakeTask.new(:spec)
 
 task :default => :spec
+
+namespace :examples do
+  desc "Clone git repositories and run Sord on them as examples"
+  task :seed do
+    require 'fileutils'
+    require 'colorize'
+
+    if File.directory?('sord_examples')
+      puts 'sord_examples directory already exists, please delete the directory before seeding!'.red
+      exit
+    end
+
+    FileUtils.mkdir 'sord_examples'
+    FileUtils.cd 'sord_examples'
+    repos = {
+      discordrb: 'https://github.com/meew0/discordrb',
+      rouge: 'https://github.com/rouge-ruby/rouge',
+      yard: 'https://github.com/lsegal/yard',
+      addressable: 'https://github.com/sporkmonger/addressable',
+      zeitwerk: 'https://github.com/fxn/zeitwerk',
+      'rspec-core': 'https://github.com/rspec/rspec-core',
+      bundler: 'https://github.com/bundler/bundler',
+      haml: 'https://github.com/haml/haml',
+      gitlab: 'https://github.com/NARKOZ/gitlab'
+    }
+
+    # Shallow clone each of the repositories and then bundle install and run sord.
+    repos.each do |name, url|
+      puts "Cloning #{name}..."
+      `git clone #{url} --depth=1`
+      FileUtils.cd name.to_s
+      # Add sord to gemfile.
+      `echo "gem 'sord', path: '../../'" >> Gemfile`
+      # Run bundle install.
+      `bundle install`
+      # Generate sri
+      puts "Generating rbi for #{name}..."
+      `bundle exec sord ../#{name}.rbi`
+      puts "#{name}.rbi generated!"
+      FileUtils.cd '..'
+    end
+
+    puts "Seeding complete!"
+  end
+
+  desc 'Delete the sord_examples directory to allow the seeder to run again.'
+  task :reset do
+    require 'fileutils'
+ 
+    FileUtils.rm_rf 'sord_examples' if File.directory?('sord_examples')
+  end
+end
+