add scraping lib
add age to users, change spec url
remove gem rails-12-factor to fix double logging
add home controller

Signed-off-by: Prasad Madala <bhanuprasad143@gmail.com>
add sidekiq gem for delayed_jobs
ScrapeUser return name, slug when fetch
add UserWorker to perform tasks
add sidekiq-limit-fetch to limit the number of workers