Add editorconfig file

.editorconfig

@@ -0,0 +1,20 @@
+; This file is for unifying the coding style for different editors and IDEs.
+; More information at http://EditorConfig.org
+
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = crlf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+max_line_length = 160
+
+[*.html]
+indent_style = space
+indent_size = 2
+
+[*.md]
+max_line_length = null