Update for rubocop (and fix its version)

.gitignore

@@ -1,3 +1,4 @@
 Gemfile.lock
 doc
-.yardoc
+.yardoc
+pkg

sho.gemspec

@@ -34,8 +34,8 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'fakefs'
   s.add_development_dependency 'slim'
 
-  s.add_development_dependency 'rubocop'
-  s.add_development_dependency 'rubocop-rspec'
+  s.add_development_dependency 'rubocop', '~> 0.57.2'
+  s.add_development_dependency 'rubocop-rspec', '~> 1.27.0'
 
   s.add_development_dependency 'rake'
   s.add_development_dependency 'rubygems-tasks'

spec/sho/configurator_spec.rb

@@ -25,6 +25,7 @@
 
     context 'when default base folder' do
       before { sho.template :test, 'fake.slim', *args }
+
       let(:path) { 'fake.slim' }
 
       it { expect(view.instance_methods).to include(:test) }
@@ -112,6 +113,7 @@ def laymeout
         sho.base_folder = 'app/views/details'
         sho.template :test, 'fake.slim', *args
       }
+
       let(:params) { {} }
       let(:path) { 'app/views/details/fake.slim' }
 
@@ -138,6 +140,7 @@ def laymeout
 
   describe '#template_inline' do
     before { sho.template_inline :test, *args }
+
     let(:args) { [{slim: 'p It works!'}] }
 
     it { expect(view.instance_methods).to include(:test) }