Add readme

.editorconfig

@@ -0,0 +1,21 @@
+# https://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+tab_width = 4
+max_line_length = off
+
+[*.{js,ts,vue,css,json,yml}]
+indent_style = space
+tab_width = 2
+
+[*.md]
+indent_style = space
+tab_width = 2
+max_line_length = off
+trim_trailing_whitespace = false