Spree setup config. Place this within config/initializers

spree_setup.rb

# Spree setup instructions

# Setup the default preferences
if Preference.table_exists?
  # Site defaults
  Spree::Config.set(:site_name => 'Classy Site Name')
  Spree::Config.set(:default_seo_title => 'Marketing Stuff')
  Spree::Config.set(:default_meta_description => 'Longer Marketing Stuff')
  Spree::Config.set(:default_meta_keywords => 'Marketing, Stuff')
  
  # Domain name
  if Rails.env.development?
    Spree::Config.set(:site_url => 'mydomain.dev')
  elsif Rails.env.production?
    Spree::Config.set(:site_url => 'mydomain.com')
  end

  # Internationalisation options
  Spree::Config.set(:default_locale => :'en-GB') # Includes translation and currency
  Spree::Config.set(:default_country_id => 213)
  Spree::Config.set(:address_requires_state => false)
  Spree::Config.set(:logo => 'store/logos/revellum-w190px.png')

  # Spree::Config.set(:show_price_inc_vat, true)
  # Spree::Config.set(:shipment_inc_vat => false)
end

@shivabhusal Since this gist is 5 years old the table names have changed. I'm on Spree 3.1, and the preferences table is called Spree::Preference. To see all the default preferences you can set open Rails console and run this command: Spree::Config.default_preferences then update the keys in this gist accordingly.