Add cucumber support gem and stock feature file
Add Twitter bootstrap 3 support and demonstrate it on about page
Fix cucumber-rails warning message
Add Haml support for Rails and demonstrate it by refactoring About page to haml
Modify gem file according to changing requirements
Geneate cucumber-rails setup
Provide steps definitions for feature file stock.feature
Add stock entity to application
Redirect application to stocks index as front page
Refactor tests to be better
Make stock.feature green
Add basic validation for fields in forms
Add bootstrap style to basic scenarios
Fix buttons view to general UI style
Replace results representation on show Stock from ul to table
Replace GoogleChartsAPI with Chart-js charts library
Make some beautification and sign project on About page