Convert README.md and LICENSE.md to DOS EOL.

Since Windows notepad is so dumb that it's unable to parse various line
endings, I converted README.md and LICENSE.md to use Windows (to be
specified: Windows notepad) line endings.

Windows uses <CR><LF> as line endings, whereas GNU/Linux and BSDs use
only <LF> as line endings. Notepad incorrectly renders UNIX line endings
as blanks/spaces, so that files appear broken. In contrast, Windows
Wordpad renders UNIX line endings correctly.

If you happen to have some files broken when opened with Windows
Notepad, try to open the file using Windows Wordpad.