Add scss_lint and rubocop to development dependency

Track with version is used to lint code.

.rubocop.yml

@@ -10,10 +10,9 @@ Style/StringLiterals:
 Style/DotPosition:
   EnforcedStyle: leading
 
-# The Rubocop version used by hound cannot yet detect RSpec expections
-# that would change meaning with "do ... end".
-Style/Blocks:
-  Enabled: false
+# Allow using {} when chaining methods
+Style/BlockDelimiters:
+  EnforcedStyle: braces_for_chaining
 
 # The default of 80 characters is a little to narrow.
 Metrics/LineLength:

bin/rubocop

@@ -0,0 +1,17 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+#
+# This file was generated by Bundler.
+#
+# The application 'rubocop' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+  Pathname.new(__FILE__).realpath)
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("rubocop", "rubocop")

bin/scss-lint

@@ -0,0 +1,17 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+#
+# This file was generated by Bundler.
+#
+# The application 'scss-lint' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+  Pathname.new(__FILE__).realpath)
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("scss_lint", "scss-lint")

pageflow.gemspec

@@ -159,4 +159,10 @@ Gem::Specification.new do |s|
 
   # A gem that makes it easy to write specs for your Rails 3 Generators.
   s.add_development_dependency 'ammeter', '~> 1.1'
+
+  # Ruby code linter
+  s.add_development_dependency 'rubocop', '~> 0.42.0'
+
+  # Scss code linter
+  s.add_development_dependency 'scss_lint', '~> 0.50.0'
 end