typo auth => oauth3

README.md

@@ -58,7 +58,7 @@ If you have no idea what you're doing
 `app.js`:
 ```js
 var OAUTH3 = window.OAUTH3;
-var auth = OAUTH3.create(window.location); // use window.location to set Client URI (your app's id)
+var oauth3 = OAUTH3.create(window.location); // use window.location to set Client URI (your app's id)
 
 
 // this is any OAuth3-compatible provider, such as oauth3.org