Adding gem 'jquery-rails' for versions > 5.1.x

[sameera207]

Rails has removed jquery from rails ? 5.1.x and the version after that needs

1 - Installing gem 'jquery-rails' explicitly
2 - rails new -j jquery [app]

Update the guild to reflect this

Issue
#ruby 2.4.3, rails 5.2.1

Fix

add and configure ``gem 'jquery-rails'`