Added and Configured gem Whenever

Gemfile

@@ -12,4 +12,5 @@ gem 'chartkick'
 gem 'rerun'
 gem 'sqlite3'
 gem 'rake'
-gem 'puma'
+gem 'puma'gem 'whenever', require: false
+

config/schedule.rb

@@ -0,0 +1,10 @@
+set :environment, ENV["RACK_ENV"]
+set :output, '/var/log/cron.log'
+
+ENV.each_key do |key|
+  env key.to_sym, ENV[key]
+end
+
+every 5.minutes do
+  rake "rate:save"
+end