add sidekiq to send devise emails async

* added deploy configuration aswellt
Update README.md
fix host for linked emails
Merge branch 'master' of github.com:rhinobird/rhinobird-api
fix deploy

* patch negroku and fetch from github
* upgrade capistrano3-unicorn
add newrelic service
chore(): Simplify json response of stream
Merge branch 'master' of github.com:rhinobird/rhinobird-api

* 'master' of github.com:rhinobird/rhinobird-api:
  add newrelic service
  fix deploy
  fix host for linked emails
  Update README.md
  add sidekiq to send devise emails async
feat(Vj): Adds delete VJ to API

[#80741096]
chore(channel): Remove stream references to improve speed
chore(rspec): Updated test env
feat(model.stream): Adds live viewers method
feat(stream): Only get livestream count on GET stream
chore(tags): Remove tags system not used
chore(Gemfile): Adds pry-byebug
fix(VJ): Fix setting live vj to false if there were viewers
Merge pull request #91 from rhinobird/clean-tags

chore(tags): Remove tags system not used
feat(like): Adds like model
feat(stream): Allow like and unlike of streams
feat(stream): Adds like count on object