Fixup CI actions and examples

.github/workflows/ruby.yml

@@ -28,6 +28,6 @@ jobs:
     - name: Install rubocop
       run: gem install -N rubocop
     - name: Rubocop
-      run: rubocop bin/ lib/
+      run: rubocop examples/ lib/
     - name: Run tests
       run: bundle exec rake

examples/simple_bot.rb

 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
 require 'matrix_sdk'
 

examples/simple_client.rb

@@ -42,7 +42,6 @@ ROOM_STATE_FILTER = {
   }
 }.freeze
 
-
 class SimpleClient < MatrixSdk::Client
   def initialize(hs_url)
     super hs_url, sync_filter_limit: 10
@@ -106,9 +105,9 @@ if $PROGRAM_NAME == __FILE__
     ARGV.shift
 
     print 'Username: '
-    user = STDIN.gets.strip
+    user = $stdin.gets.strip
     puts 'Password: '
-    password = STDIN.noecho(&:gets).strip
+    password = $stdin.noecho(&:gets).strip
 
     puts 'Logging in...'
     client.login(user, password, no_sync: true)
@@ -133,7 +132,7 @@ if $PROGRAM_NAME == __FILE__
     puts 'Entering main loop'
     loop do
       print '> '
-      msg = STDIN.gets.strip
+      msg = $stdin.gets.strip
       break if msg.start_with? '/quit'
 
       if msg.start_with? '/me'