.editconfig

https://github.com/editorconfig/editorconfig/wiki/EditorConfig-Properties

# editorconfig.org
root = true

[*]
indent_style = space
end_of_line = lf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true

[*.{js,css,html}]
indent_style = space
indent_size = 2

[*.{md,markdown}]
trim_trailing_whitespace = false