Paid apps search with pname doesn't work

[RankoR]

    ```
    $appsRequest = new AppsRequest();
    $appsRequest->setQuery("pname:$packageName");
    $appsRequest->setStartIndex(0);
    $appsRequest->setEntriesCount(10);
    $appsRequest->setWithExtendedInfo(false);

    $requestGroup = new Request_RequestGroup();
    $requestGroup->setAppsRequest($appsRequest);

    $response = $this->session->execute($requestGroup);

    foreach ($response->getResponsegroupArray() as $responseGroup) {
        $appsResponse = $responseGroup->getAppsResponse();

        foreach ($appsResponse->getAppArray() as $responseApp) {
            var_dump($responseApp);
        }
    }
    ```

If I use packageName of any free app — it founds it. If app is paid — it returns 0 results.

[vincentkoc]

Hi @RankoR - Potential issue with Protobuff files same as issue #38 - Will be looking into this over the next 2-3 weeks.