add support for push notifications

.travis.yml

@@ -1,5 +1,7 @@
 language: php
 
+dist: precise
+
 php:
   - 5.3
   - 5.4

src/Message/AbstractRequest.php

@@ -84,6 +84,51 @@ public function setErrorUrl($value)
         return $this->setParameter('errorUrl', $value);
     }
 
+    /**
+     * returns the push URL
+     *
+     * @return string pushUrl
+     */
+    public function getPushUrl()
+    {
+        return $this->getParameter('pushUrl');
+    }
+
+    /**
+     * sets the push URL which is used by buckaroo when
+     * the payment results is sent via push
+     *
+     * @param $value
+     *
+     * @return \Omnipay\Common\Message\AbstractRequest
+     */
+    public function setPushUrl($value)
+    {
+        return $this->setParameter('pushUrl', $value);
+    }
+
+    /**
+     * returns the push failure URL
+     *
+     * @return string pushfailureUrl
+     */
+    public function getPushFailureUrl()
+    {
+        return $this->getParameter('pushfailureUrl');
+    }
+
+    /**
+     * sets the push failure URL which is used by buckaroo when
+     * the payment error results is sent via push
+     *
+     * @param $value
+     *
+     * @return \Omnipay\Common\Message\AbstractRequest
+     */
+    public function setPushFailureUrl($value)
+    {
+        return $this->setParameter('pushfailureUrl', $value);
+    }
 
     public function getData()
     {
@@ -100,6 +145,8 @@ public function getData()
         $data['Brq_returnreject'] = $this->getRejectUrl();
         $data['Brq_returnerror'] = $this->getErrorUrl();
         $data['Brq_culture'] = $this->getCulture();
+        $data['Brq_push'] = $this->getPushUrl();
+        $data['Brq_pushfailure'] = $this->getPushFailureUrl();
 
         return $data;
     }

tests/Message/AbstractRequestTest.php

@@ -34,6 +34,8 @@ public function testGetData()
             'errorUrl' => 'https://www.example.com/error',
             'rejectUrl' => 'https://www.example.com/reject',
             'culture' => 'nl-NL',
+            'pushUrl' => 'https://www.example.com/push',
+            'pushfailureUrl' => 'https://www.example.com/pushfailure',
         ));
 
         $data = $this->request->getData();
@@ -47,6 +49,8 @@ public function testGetData()
         $this->assertSame('https://www.example.com/error', $data['Brq_returnerror']);
         $this->assertSame('https://www.example.com/reject', $data['Brq_returnreject']);
         $this->assertSame('nl-NL', $data['Brq_culture']);
+        $this->assertSame('https://www.example.com/push', $data['Brq_push']);
+        $this->assertSame('https://www.example.com/pushfailure', $data['Brq_pushfailure']);
     }
 
     public function testGenerateSignature()