Replace therubyracer with mini_racer

The ruby racer pegged libV8 to V3 which is too old for 'Set' which is
now standard in JS. The ruby racer therefore cannot be supported this
gem.

Author: BookOfGreg

Appraisals

@@ -15,9 +15,10 @@ appraise 'rails-4.0.5' do
   gem 'turbolinks'
 end
 
-appraise 'rails-4.0-with-therubyracer' do
+appraise 'rails-4.0-with-mini_racer' do
   gem 'rails', '~> 4.0.13'
-  gem 'therubyracer', '0.12.0', :platforms => :mri
+  gem 'mini_racer', :platforms => :mri
+  gem 'therubyrhino', :platforms => :jruby
   gem 'turbolinks'
 end
 
@@ -55,7 +56,7 @@ appraise 'rails-5_no_sprockets_webpacker_1_1' do
   gem 'webpacker', '~> 1.1.0'
   # This ExecJS backend provides stateful context
   # which the default nodejs backend does not
-  gem 'therubyracer', :platforms => :mri
+  gem 'mini_racer', :platforms => :mri
   gem 'therubyrhino', :platforms => :jruby
 end
 
@@ -64,7 +65,7 @@ appraise 'rails-5_no_sprockets_webpacker_1_x' do
   gem 'webpacker', '~> 1.2'
   # This ExecJS backend provides stateful context
   # which the default nodejs backend does not
-  gem 'therubyracer', :platforms => :mri
+  gem 'mini_racer', :platforms => :mri
   gem 'therubyrhino', :platforms => :jruby
 end
 
@@ -73,7 +74,7 @@ appraise 'rails-5_no_sprockets_webpacker_2' do
   gem 'webpacker', '~> 2.0'
   # This ExecJS backend provides stateful context
   # which the default nodejs backend does not
-  gem 'therubyracer', :platforms => :mri
+  gem 'mini_racer', :platforms => :mri
   gem 'therubyrhino', :platforms => :jruby
 end
 
@@ -82,7 +83,7 @@ appraise 'rails-5_no_sprockets_webpacker_3' do
   gem 'webpacker', '>= 3.0'
   # This ExecJS backend provides stateful context
   # which the default nodejs backend does not
-  gem 'therubyracer', :platforms => :mri
+  gem 'mini_racer', :platforms => :mri
   gem 'therubyrhino', :platforms => :jruby
 end
 

gemfiles/rails_4.0_with_mini_racer.gemfile

@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "rails", "~> 4.0.13"
+gem "mini_racer", platforms: :mri
+gem "therubyrhino", platforms: :jruby
+gem "turbolinks"
+
+gemspec path: "../"

gemfiles/rails_5_no_sprockets_webpacker_1_1.gemfile

@@ -4,7 +4,7 @@ source "http://rubygems.org"
 
 gem "rails", "~> 5.0.0"
 gem "webpacker", "~> 1.1.0"
-gem "therubyracer", platforms: :mri
+gem "mini_racer", platforms: :mri
 gem "therubyrhino", platforms: :jruby
 
 gemspec path: "../"

gemfiles/rails_5_no_sprockets_webpacker_1_x.gemfile

@@ -4,7 +4,7 @@ source "http://rubygems.org"
 
 gem "rails", "~> 5.0.0"
 gem "webpacker", "~> 1.2"
-gem "therubyracer", platforms: :mri
+gem "mini_racer", platforms: :mri
 gem "therubyrhino", platforms: :jruby
 
 gemspec path: "../"

gemfiles/rails_5_no_sprockets_webpacker_2.gemfile

@@ -4,7 +4,7 @@ source "http://rubygems.org"
 
 gem "rails", "~> 5.0.0"
 gem "webpacker", "~> 2.0"
-gem "therubyracer", platforms: :mri
+gem "mini_racer", platforms: :mri
 gem "therubyrhino", platforms: :jruby
 
 gemspec path: "../"

gemfiles/rails_5_no_sprockets_webpacker_3.gemfile

@@ -4,7 +4,7 @@ source "http://rubygems.org"
 
 gem "rails", "~> 5.0.0"
 gem "webpacker", ">= 3.0"
-gem "therubyracer", platforms: :mri
+gem "mini_racer", platforms: :mri
 gem "therubyrhino", platforms: :jruby
 
 gemspec path: "../"