Configure editor

.editorconfig

@@ -0,0 +1,26 @@
+# Default
+[*]
+charset = "utf-8"
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# JavaScript
+[*.js]
+indent_style = space
+indent_size = 2
+
+# JSON
+[*.json]
+indent_style = space
+indent_size = 4
+
+# Markdown
+[*.md]
+trim_trailing_whitespace = false
+indent_style = space
+indent_size = 4
+
+# XML
+[*.xml]
+indent_size = 2