update: contest-token.txt

remove useless imported package

add delete and share icons

add divider for expanded card

add collapsed card

add header and icon for card

test the commit

add delete and share icons

add divider for expanded card

add collapsed card

add header and icon for card

test the commit

add missed const to constructor

add reset password functionality

add email validation

add buttons: login, register, forget password

add login screen

Add DEVELOPMENT.md: done and roadmap; link from README

Initial implementation of piano comparison CLI

create the first version of the app`s screens

F04 - make interface of app

first comomit

rack aplication contains headers = { "Content-Type" => "text/html" }. Puma complains : Rack::Lint::LintError: uppercase character in header name: Content-Type.

when header contains uppercase letters then puma complains that \'Rack::Lint::LintError: uppercase character in header name: Content-Type\'