Added a version endpoint

app/Http/Controllers/Api/GeneralController.php

@@ -22,4 +22,14 @@ class GeneralController extends AbstractApiController
     {
         return $this->item('Pong!');
     }
+
+    /**
+     * Endpoint to show the Cachet version.
+     *
+     * @return \Illuminate\Http\JsonResponse
+     */
+    public function version()
+    {
+        return $this->item(CACHET_VERSION);
+    }
 }

app/Http/Routes/ApiRoutes.php

@@ -32,6 +32,7 @@ class ApiRoutes
         $router->group(['namespace' => 'Api', 'prefix' => 'api/v1', 'middleware' => ['api']], function ($router) {
             $router->group(['middleware' => ['auth.api']], function ($router) {
                 $router->get('ping', 'GeneralController@ping');
+                $router->get('version', 'GeneralController@version');
 
                 $router->get('components', 'ComponentController@getComponents');
                 $router->get('components/groups', 'ComponentGroupController@getGroups');