Rails 4.0.4 => Rails 4.1.0アップデート

参考：Ruby on Rails 4.1 Release Notes #1(Rails4.1へのupgrade方法) - rochefort's blog

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Gemfile

gem 'rails', '4.1.0'

bundle update

cat config/initializers/secret_token.rb
----------
APP_NAME::Application.config.secret_key_base = 'xxxxxxxxxx'
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↓secret_key_baseをsecret_key_baseにコピー

vi config/secrets.yml
----------
development:
  secret_key_base: 'xxxxxxxxxx'
 
test:
  secret_key_base: 'xxxxxxxxxx'
 
production:
  secret_key_base: 'xxxxxxxxxx'
----------

rm config/initializers/secret_token.rb