private function updateAndReturnLatestCommits()
 {
     if ($lastSavedCommit = Commit::orderBy('when', 'desc')->first()) {
         $url = "https://api.github.com/repos/nodejs/node/commits?per_page=25&since=" . gmDate("Y-m-d\\TH:i:s\\Z", strtotime($lastSavedCommit->created_at));
     } else {
         $url = "https://api.github.com/repos/nodejs/node/commits?per_page=25";
     }
     $curl = curl_init();
     curl_setopt($curl, CURLOPT_URL, $url);
     curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
     curl_setopt($curl, CURLOPT_HEADER, false);
     curl_setopt($curl, CURLOPT_USERAGENT, 'Picmonic PHP Test');
     $data = curl_exec($curl);
     $data = json_decode($data);
     curl_close($curl);
     foreach ($data as $commitData) {
         $commit = new Commit();
         $commit->sha = $commitData->sha;
         $commit->name = $commitData->commit->author->name;
         $commit->message = $commitData->commit->message;
         $commit->when = $commitData->commit->committer->date;
         $commit->url = $commitData->commit->url;
         $commit->save();
     }
     return Commit::orderBy('when', 'desc')->take(25)->get();
 }