Forgot to export OAuthApp class

src/index.ts

@@ -3,13 +3,15 @@ import { Initializer } from './Initializer';
 import { Router } from './Router';
 import { Renderer } from './Renderer';
 import { StaticFileResolver } from './StaticFileResolver';
+import { OAuthApp } from './OAuthApp';
 
 export {
     App,
     Initializer,
     Router,
     Renderer,
-    StaticFileResolver
+    StaticFileResolver,
+    OAuthApp
 };
 export * from './controllers';
 export * from './decorators';