test with wercker

tests/unit/backup.bats

@@ -0,0 +1,20 @@
+#!/usr/bin/env bats
+
+# load test_helper
+
+# setup() {
+#   create_app
+#   backup_file=$(mktemp /tmp/backup.XXXXXX)
+#   rm $backup_file
+# }
+
+# teardown() {
+#   destroy_app
+# }
+
+# @test "backup:export" {
+#   run dokku backup:export $backup_file
+#   echo "output: "$output
+#   echo "status: "$status
+#   assert_success
+# }