Correct typehint for Tokens::listScopes (#11)

* Correct typehint for listScopes - the first argument is an array, not a string

* Add `array` to signature

* v0.1.4

composer.json

@@ -1,7 +1,7 @@
 {
   "name": "talis/talis-php",
   "description": "This is a php client library for talis api's",
-  "version": "0.1.3",
+  "version": "0.1.4",
   "keywords": [
     "persona",
     "echo",

src/Talis/Persona/Client/Tokens.php

@@ -225,21 +225,21 @@ public function obtainNewToken($clientId, $clientSecret, array $params = [])
 
     /**
      * List all scopes that belong to a given token
-     * @param string $token JWT token
+     * @param array $tokenInArray An array containing a JWT under the key `access_token`
      * @param integer $pubCertCacheTTL optional JWT public certificate time-to-live
      * @return array list of scopes
      *
      * @throws TokenValidationException Invalid signature, key or token
      */
-    public function listScopes($token, $pubCertCacheTTL = 300)
+    public function listScopes(array $tokenInArray, $pubCertCacheTTL = 300)
     {
-        if (!isset($token['access_token'])) {
+        if (!isset($tokenInArray['access_token'])) {
             throw new TokenValidationException('missing access token');
         }
 
         $publicCert = $this->retrieveJWTCertificate($pubCertCacheTTL);
 
-        $encodedToken = $token['access_token'];
+        $encodedToken = $tokenInArray['access_token'];
         $decodedToken = $this->decodeToken($encodedToken, $publicCert);
 
         if (isset($decodedToken['scopes']) && is_array($decodedToken['scopes'])) {