Scaffolded survey module
Added nested form gem for handling nested questions with survey
table for questions
Questions model with STI for different types of questions
Survey section with nested questions, its spec and factories(TDD try)
removed default index file
Home controller and its view & generated spec
Index action to display all the published surveys
changed root route to home#index
refactored little bit, changed survey column :status to :published
Migrations and schema for survey responses and its answers
answer spec and sucess model
response model and answer model with spec and factories 
test coveres basic validation and response and answer creation
scaffolded response and associated answer section.
Nested routing for survey and response
association added for response and answers to question and survey