Update .editorconfig.

[ci skip]

Author: XhmikosR

.editorconfig

@@ -1,13 +1,16 @@
-; See http://EditorConfig.org for supported IDEs
+# editorconfig.org
 
-root = true ; top-most EditorConfig file
+root = true
 
 [*]
-indent_style = space
-indent_size = 4
 charset = utf-8
+indent_size = 4
+indent_style = space
+insert_final_newline = true
 trim_trailing_whitespace = true
-insert_final_newline = false
+
+[*.md]
+trim_trailing_whitespace = false
 
 [package.json]
 indent_size = 2