Update the docblock for the CsrfFilter.

Signed-off-by: Jason Lewis <jason.lewis1991@gmail.com>

app/Http/Filters/CsrfFilter.php

@@ -10,7 +10,11 @@ class CsrfFilter {
 	/**
 	 * Run the request filter.
 	 *
-	 * @return mixed
+	 * @param  \Illuminate\Routing\Route  $route
+	 * @param  \Illuminate\Http\Request  $request
+	 * @return void
+	 * 
+	 * @throws \Illuminate\Session\TokenMismatchException
 	 */
 	public function filter(Route $route, Request $request)
 	{