added .editorconfig to help prevent wrong indent types

must have editor config plugin (https://visualstudiogallery.msdn.microsoft.com/c8bccfe2-650c-4b42-bc5c-845e21f96328) installed to have any effect

.editorconfig

@@ -0,0 +1,6 @@
+# top-most EditorConfig file
+root = true
+
+[*.cs]
+indent_style = space
+indent_size = 4