add .editorconfig

Author: faxemaxee

.editorconfig

@@ -0,0 +1,19 @@
+# Editor configuration, see http://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+indent_style = spaces
+indent_size = 4
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.css]
+indent_size = 2
+
+[*.yml]
+indent_size = 2
+
+[*.md]
+max_line_length = off
+trim_trailing_whitespace = false