Added file upload for attachments

Author: lucor

.gitignore

@@ -0,0 +1 @@
+vendor

lib/Redmine/Api/Attachment.php

@@ -21,4 +21,16 @@ public function show($id)
     {
         return $this->get('/attachments/'.urlencode($id).'.json');
     }
+
+   /**
+    * Upload a file to redmine
+    * @link http://www.redmine.org/projects/redmine/wiki/Rest_api#Attaching-files
+    *
+    * @param  string $attachment the attachment content
+    * @return array  information about the attachment
+    */
+    public function upload($attachment)
+    {
+      return $this->post('/uploads.json', $attachment);
+    }
 }

lib/Redmine/Client.php

@@ -272,6 +272,12 @@ private function runRequest($path, $method = 'GET', $data = '')
             ));
         }
 
+        if ('/uploads.json' === $path || '/uploads.xml' === $path) {
+            curl_setopt($curl, CURLOPT_HTTPHEADER, array(
+                'Content-Type: application/octet-stream',
+            ));
+        }
+
         switch ($method) {
             case 'POST':
                 curl_setopt($curl, CURLOPT_POST, 1);