Added inline documentation.

src/Provider/Bootable_Provider_Interface.php

@@ -6,5 +6,10 @@ use Rarst\Laps\Plugin;
 
 interface Bootable_Provider_Interface {
 
+	/**
+	 * @param Plugin $laps Container instance.
+	 *
+	 * @return void
+	 */
 	public function boot( Plugin $laps );
 }