Update Rails 6.0 version from beta

Author: andrehjr

Appraisals

@@ -15,5 +15,5 @@ appraise "5.2" do
 end
 
 appraise "6.0" do
-  gem 'rails', '~> 6.0.0.beta3'
+  gem 'rails', '~> 6.0'
 end

gemfiles/6.0.gemfile

@@ -4,6 +4,6 @@ source "https://rubygems.org"
 
 gem "appraisal"
 gem "codeclimate-test-reporter"
-gem "rails", "~> 6.0.0.beta3"
+gem "rails", "~> 6.0"
 
 gemspec path: "../"