add skylight

Gemfile

@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 ruby '2.7.6'
 
-gem 'rails' , "> 5.2"
+gem 'rails' , "~> 5.2"
 
 
 gem 'sass-rails'
@@ -15,7 +15,7 @@ gem 'opal', '~> 0.11.0'
 gem 'opal-rails'
 gem 'opal-jquery'
 gem 'opal-browser' , "0.2.0"
-
+gem "skylight"
 gem "rubyx" , "0.6" , git: "https://github.com/ruby-x/rubyx" , require: false
 gem "rubyx-debugger" , "0.3" , git: "https://github.com/ruby-x/rubyx-debugger" , require: false
 gem "rx-file" , git: "https://github.com/ruby-x/rx-file"

Gemfile.lock

@@ -236,6 +236,8 @@ GEM
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
     sexp_processor (4.11.0)
+    skylight (5.3.4)
+      activesupport (>= 5.2.0)
     sourcemap (0.1.1)
     spring (2.0.2)
       activesupport (>= 4.2)
@@ -289,12 +291,13 @@ DEPENDENCIES
   opal-rails
   passenger (= 6.0.15)
   puma
-  rails (> 5.2)
+  rails (~> 5.2)
   rspec-rails
   rubyx (= 0.6)!
   rubyx-debugger (= 0.3)!
   rx-file!
   sass-rails
+  skylight
   spring
   spring-watcher-listen (~> 2.0.0)
   susy (= 2.2.12)

config/skylight.yml

@@ -0,0 +1,3 @@
+---
+# The authentication token for the application.
+authentication: iBGuWCzXDzUt--hY4yajFOPesFETdCZwhx0P0dwDFlU