Add support for token based api authentication https://www.loggly.com…

…/docs/token-based-api-authentication/

Loggly.php

@@ -24,6 +24,7 @@ class Loggly {
     public $subdomain = '';
     public $username = '';
     public $password  = '';
+    public $apiToken  = '';
     public $inputs = array();
 
     public function __construct() {}
@@ -47,7 +48,13 @@ public function makeRequest($path, $params = null, $method = 'GET') {
         }
 
         # set HTTP headers
-        curl_setopt($curl, CURLOPT_USERPWD, $this->username . ':' . $this->password);
+        $headers = [];
+        if($this->username || $this->password){
+            curl_setopt($curl, CURLOPT_USERPWD, $this->username . ':' . $this->password);
+        }
+        if($this->apiToken){
+            $headers[] = 'Authorization: bearer ' . $this->apiToken;
+        }
         curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
         curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
 
@@ -72,7 +79,11 @@ public function makeRequest($path, $params = null, $method = 'GET') {
 
         # satisfy content length header requirement for PUT
         if ($method === 'PUT') {
-            curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Length: ' . strlen($qs))); 
+            $headers[] = 'Content-Length: ' . strlen($qs);
+        }
+
+        if(!empty($headers)){
+            curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
         }
 
         $result = curl_exec($curl);