Add dalli, mongoid, dotenv and clean rails default
Update project name to PomodoramaAPI
Remove useless rails generated assets

Fix hysteria in application.rb
Add ruby-version
Merge branch 'feature/rails_cleaning' into develop

* feature/rails_cleaning:
  Add ruby-version
  Remove useless rails generated assets
  Update project name to PomodoramaAPI
  Add dalli, mongoid, dotenv and clean rails default