add layout, header, footer, css files
Merge pull request #2 from linhnt/develop

add layout, header, footer, css files
login and add user screen
Merge pull request #3 from KhanhLD/work

login and add user screen
update draft layout
Merge pull request #4 from linhnt/develop

update draft layout
config mailer
Merge pull request #5 from linhnt/develop

config mailer
add/edit/delete user - draft
Merge pull request #6 from KhanhLD/work

add/edit/delete user - draft
update login rspec
Merge pull request #7 from linhnt/develop

update login rspec
TDD for User