Convert to plugin system

Author: Zopolis4

README.md

@@ -11,5 +11,5 @@ gem install rubocop-chromebrew
 ## Usage
 
 ```
-rubocop --require rubocop-chromebrew
+rubocop --plugin rubocop-chromebrew
 ```

lib/rubocop-chromebrew.rb

@@ -1,8 +1,6 @@
 require 'rubocop'
 
 require_relative 'rubocop/chromebrew'
-require_relative 'rubocop/chromebrew/inject'
-
-RuboCop::Chromebrew::Inject.defaults!
+require_relative 'rubocop/chromebrew/plugin'
 
 require_relative 'rubocop/cop/chromebrew_cops'

lib/rubocop/chromebrew/inject.rb

@@ -0,0 +1,28 @@
+require 'lint_roller'
+
+module RuboCop
+  module Chromebrew
+    class Plugin < LintRoller::Plugin
+      def about
+        LintRoller::About.new(
+          name: 'rubocop-chromebrew',
+          version: '0.0.4',
+          homepage: 'https://github.com/chromebrew/rubocop-chromebrew',
+          description: 'A RuboCop extension for Chromebrew-specific practices.'
+        )
+      end
+
+      def supported?(context)
+        context.engine == :rubocop
+      end
+
+      def rules(_context)
+        LintRoller::Rules.new(
+          type: :path,
+          config_format: :rubocop,
+          value: Pathname.new(__dir__).join('../../../config/default.yml')
+        )
+      end
+    end
+  end
+end

lib/rubocop/chromebrew/plugin.rb

@@ -7,8 +7,11 @@ Gem::Specification.new do |spec|
   spec.email    = 'creatorsmithmdt@gmail.com'
   spec.homepage = 'https://github.com/chromebrew/rubocop-chromebrew'
 
+  spec.metadata['default_lint_roller_plugin'] = 'RuboCop::Chromebrew::Plugin'
+
   spec.files         = `git ls-files`.split("\n")
   spec.require_paths = ['lib']
 
+  spec.add_dependency 'lint_roller'
   spec.add_runtime_dependency 'rubocop'
 end