Add editorconfig

.editorconfig

@@ -0,0 +1,15 @@
+# EditorConfig helps developers define and maintain consistent
+# coding styles between different editors and IDEs
+# editorconfig.org
+
+root = true
+
+[*]
+indent_style = tab
+indent_size = 2
+end_of_line = crlf
+charset = utf-8
+insert_final_newline = true
+
+[*.json]
+indent_style = space