Some fixes to met travis requirements

Author: gpilla

lib/Redmine/Client.php

@@ -146,7 +146,8 @@ public function getUrl()
 
     /**
      * HTTP GETs a json $path and tries to decode it
-     * @param  string $path
+     * @param  string  $path
+     * @param  boolean $decode
      * @return array
      */
     public function get($path, $decode = true)

lib/Redmine/TestUrlClient.php

@@ -4,7 +4,7 @@
 
 class TestUrlClient extends Client
 {
-    public function get($path)
+    public function get($path, $decode = true)
     {
         return $this->runRequest($path, 'GET');
     }