Abort Deployment when pre-deploy task fails. Addresses issue #29

docs/example-config/.mage/config/environment/staging.yml

@@ -4,18 +4,19 @@ deployment:
   from: ./
   to: /var/www/
   scm:
-    branch: master2
+    branch: master
 releases:
   enabled: true
   max: 5
   symlink: current
   directory: releases
 hosts:
-#  - localhost
+  - localhost
 #  - dbserver
 tasks:
   pre-deploy:
     - sampleTask
+#    - failTask
     - scm/update
   on-deploy:
     - privileges

docs/example-config/.mage/tasks/FailTask.php

@@ -0,0 +1,17 @@
+<?php
+namespace Task;
+
+use Mage\Task\AbstractTask;
+
+class FailTask extends AbstractTask
+{
+    public function getName()
+    {
+        return 'A Failing Task';
+    }
+
+    public function run()
+    {
+        return false;
+    }
+}