#20. List of things a RoR developer should be aware about

1. Environment variables
2. Ruby Version Manager - RVM, rbenv
3. gemset, bundler
4. Rails App Structure
5. rackup file - config.ru
6. params - paraqmeters in rails
7. query parameters
8. Why http://localhost:3000/users/1 and not http://localhost:3000/users?id=1
9. Restful API
10. Agile methodlologies
11. MVC design patterns
12. Why just instance variables pass from controller to view
13. active record
14. rails scope - named, default, unscope
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