done with static page to dynamic page

Signed-off-by: kavinfd <kavin@freshdesk.com> half way on exercise
Signed-off-by: kavinfd <kavin@freshdesk.com>
help added

Signed-off-by: kavinfd <kavin@freshdesk.com>
chapter 3 completion

used before(:each) construct of rspec to refactor the code

Signed-off-by: kavinfd <kavin@freshdesk.com>