Add README.ru.md to DISTFILES and fix LICENSE.BSD-3-Clause.md file name in .pro file

Слиты aa13q запросил слияние fixes в dev

[Structure] Add README.ru.md to DISTFILES. #23 (closed)

[Structure] Fix LICENSE.BSD-3-Clause.md file name in .pro file. #23 (closed)

Отредактировано пользователем aa13q