add editorconfig for .gitignore

.editorconfig

@@ -14,4 +14,8 @@ indent_size = 2
 charset = utf-8
 
 [*.md]
-trim_trailing_whitespace = false
+trim_trailing_whitespace = false
+
+[.gitignore]
+# echo "filename" >> .gitignorre
+insert_final_newline = true