Update README.md

Author: PatrickJS

README.md

@@ -10,6 +10,14 @@ ___
 Allow defaults for `@Component` metadata for Angular 2
 
 `npm install @angularclass/conventions-loader --save-dev`
+loader options
+```es6
+// default values
+selectorPrefix = '';
+cssExtension   = '.css';
+htmlExtension  = '.html';
+'-component' is removed from selector generated by className
+```
 
 ```js
 {