스케쥴러 시작/정기 기능 추가

db/seeds.rb

@@ -8,6 +8,6 @@
 #     MovieGenre.find_or_create_by!(name: genre_name)
 #   end
 
-(0..23).each_with_index do |h, index|
-  Schedule.create!(hour: h, temperature: index)
+(0..23).each do | h |
+  Schedule.create!(hour: h, temperature: 15.0)
 end