Init rails 4.1

.rspec.diff

# rspec3' generator ( 'rspec:install' ) creates .spec
# with '--warnings' as default.
# That causes printing the messages like below:
#
#   vendor/bundle/ruby/2.1.0/gems/celluloid-0.15.2/lib/celluloid/tasks.rb:76: warning: global variable `$CELLULOID_DEBUG' not initialized
#   vendor/bundle/ruby/2.1.0/gems/guard-2.6.1/lib/guard/interactor.rb:64: warning: instance variable @enabled not initialized
#
# This is very messy especially when using guard + spring because it puts the messages continuously.
# I hate that so that remove the option.

diff --git a/.rspec b/.rspec
index 0d786ba..83e16f8 100644
--- a/.rspec
+++ b/.rspec
@@ -1,3 +1,2 @@
 --color
---warnings
 --require spec_helper

config-environments-development.diff

--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -34,4 +34,7 @@

   # Raises error for missing translations
   # config.action_view.raise_on_missing_translations = true
+
+  # Live Reload
+  config.middleware.use Rack::LiveReload
 end

Gemfile

source 'https://rubygems.org'

gem 'rails', '4.2.3'

gem 'sqlite3'

gem 'rails_config'    # define consts using YAML

gem 'therubyracer', platforms: :ruby
gem 'uglifier', '>= 1.3.0'
gem 'sass-rails', '~> 5.0'
gem 'coffee-rails', '~> 4.1.0'
gem 'haml-rails'
gem 'jbuilder', '~> 2.0'
gem 'bootstrap-sass'
gem 'jquery-rails'
gem 'turbolinks'
gem 'simple_form'


group :doc do
  gem 'sdoc', '~> 0.4.0'
end

group :development do
  gem 'quiet_assets'

  # Live Reload
  gem 'guard-livereload', require: false
  gem 'rack-livereload'
end

group :development, :test do
  gem 'spring'
  gem 'web-console', '~> 2.0'

  gem 'hirb-unicode'
  gem 'pry-rails'
  gem 'pry-byebug'
  gem 'better_errors'
  gem 'binding_of_caller'
end

group :test do
  gem 'rspec-rails'
  gem 'guard-rspec'
  gem 'spring-commands-rspec'
  gem 'factory_girl_rails'
  gem 'database_cleaner'
end

group :production do
  gem 'lograge'   # simplify the rails http log
end

generators.rb

# in config/initializers

Rails.application.configure do
  config.generators do |gen|
    gen.test_framework :rspec, fixture: true
    gen.fixture_replacement :factory_girl,
      dir: "spec/support/factories"

    gen.javascript_engine :coffee
    gen.stylesheet_engine :sass
    gen.template_engine   :haml
  end
end

Guardfile

group :rspec do
  guard :rspec, cmd: "bundle exec spring rspec" do
    watch(%r{^spec/.+_spec\.rb$})
    watch(%r{^lib/(.+)\.rb$})     { |m| "spec/lib/#{m[1]}_spec.rb" }
    watch('spec/spec_helper.rb')  { "spec" }

    # Rails example
    watch(%r{^app/(.+)\.rb$})                           { |m| "spec/#{m[1]}_spec.rb" }
    watch(%r{^app/(.*)(\.erb|\.haml|\.slim)$})          { |m| "spec/#{m[1]}#{m[2]}_spec.rb" }
    watch(%r{^app/controllers/(.+)_(controller)\.rb$})  { |m| ["spec/routing/#{m[1]}_routing_spec.rb", "spec/#{m[2]}s/#{m[1]}_#{m[2]}_spec.rb", "spec/acceptance/#{m[1]}_spec.rb"] }
    watch(%r{^spec/support/(.+)\.rb$})                  { "spec" }
    watch('config/routes.rb')                           { "spec/routing" }
    watch('app/controllers/application_controller.rb')  { "spec/controllers" }

    # Capybara features specs
    watch(%r{^app/views/(.+)/.*\.(erb|haml|slim)$})     { |m| "spec/features/#{m[1]}_spec.rb" }

    # Turnip features and steps
    watch(%r{^spec/acceptance/(.+)\.feature$})
    watch(%r{^spec/acceptance/steps/(.+)_steps\.rb$})   { |m| Dir[File.join("**/#{m[1]}.feature")][0] || 'spec/acceptance' }
  end
end

group :livereload do
  guard 'livereload' do
    watch(%r{app/views/.+\.(erb|haml|slim)$})
    watch(%r{app/helpers/.+\.rb})
    watch(%r{public/.+\.(css|js|html)})
    watch(%r{config/locales/.+\.yml})
    # Rails Assets Pipeline
    watch(%r{(app|vendor)(/assets/\w+/(.+\.(css|js|html|png|jpg))).*}) { |m| "/assets/#{m[3]}" }
  end
end

install.sh

# terminal execution example

rails new -B -T app_name
cd app_name

# EDIT: Gemfile

bundle install --path vendor/bundle
bundle binstub rspec-core guard spring

export PATH=`pwd`/bin:$PATH

rails g simple_form:install --bootstrap
rails g rspec:install
guard init
spring binstub --all

# EDIT: .spec
# EDIT: Guardfile
# EDIT: spec/rails_helper.rb
# EDIT: config/initializers/generators.rb
# EDIT: config/environments/development.rb

spec-rails_helper.diff

diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -39,4 +39,7 @@
   # the seed, which is printed after each run.
   #     --seed 1234
   config.order = "random"
+
+  # Use factory girl for fixture
+  config.include FactoryGirl::Syntax::Methods
 end

TODO:
Rails Application Templates — Ruby on Rails Guides