Запрос на слияние 'first' (#2) из first в master

update README.md

create README.md

create demo/spec

create demo/views.py

update README.md

create README.md

create demo/spec

create demo/views.py

create demo/urls.py

update demo/well_done

update demo/solution.py

update demo/solution.py

update demo/solution.py

create demo/solution.py

create demo/well_done

delete demo/dev/spec/well_done

create demo/dev/spec/well_done