Added CONTRIBUTORS.md file.

Signed-off-by: Jacob Kiers <jacob@jacobkiers.net>

CONTRIBUTORS.md

@@ -0,0 +1,9 @@
+This project has had multiple authors. In this file, I will try to credit
+each of them. If you are not listed for some reason, please ask.
+
+Andy Smith authored the original code (http://oauth.googlecode.com/svn/code/php/).
+
+ * Alexandre Eher (@EHER)
+ * Gary Jones (@GaryJones)
+ * Jacob Kiers (@jacobkiers)
+ * Alexandru G. (@vimishor)

src/JacobKiers/OAuth/Request/Request.php

@@ -157,7 +157,7 @@ public static function fromConsumerAndToken(
             'oauth_nonce' => Request::generateNonce(),
             'oauth_timestamp' => Request::generateTimestamp(),
             'oauth_consumer_key' => $consumer->getKey());
-        if ($token) {
+        if ($token->getKey()) {
             $defaults['oauth_token'] = $token->getKey();
         }