Update rubocop to version 0.37.0

Gemfile.lock

@@ -168,11 +168,12 @@ GEM
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 3.0)
       netrc (~> 0.7)
-    rubocop (0.36.0)
-      parser (>= 2.3.0.0, < 3.0)
+    rubocop (0.37.0)
+      parser (>= 2.3.0.2, < 3.0)
       powerpack (~> 0.1)
       rainbow (>= 1.99.1, < 3.0)
       ruby-progressbar (~> 1.7)
+      unicode-display_width (~> 0.3)
     ruby-progressbar (1.7.5)
     safe_yaml (1.0.4)
     sass (3.4.21)
@@ -212,6 +213,7 @@ GEM
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.1)
+    unicode-display_width (0.3.1)
     validates_formatting_of (0.9.0)
       activemodel
     warden (1.2.6)

config/initializers/secret_token.rb

@@ -8,7 +8,7 @@
 # You can use `rake secret` to generate a secure secret key.
 
 if Rails.env.production? && ENV['SECRET_TOKEN'].blank?
-  fail 'The SECRET_TOKEN environment variable is not set.\n
+  raise 'The SECRET_TOKEN environment variable is not set.\n
     To generate it, run "rake secret", then set it with "heroku config:set SECRET_TOKEN=the_token_you_generated"'
 end
 

db/migrate/00000000000002_add_devise_to_users.rb

@@ -43,6 +43,6 @@ class AddDeviseToUsers < ActiveRecord::Migration
   def down
     # By default, we don't want to make any assumption about how to roll back a migration when your
     # model already existed. Please edit below which fields you would like to remove in this migration.
-    fail ActiveRecord::IrreversibleMigration
+    raise ActiveRecord::IrreversibleMigration
   end
 end