Fixes acquia#1322: Examples.feature changes overwritten whenever BLT is updated.

Author: grasmash

scripts/blt/ignore-existing.txt

@@ -16,5 +16,6 @@ factory-hooks/pre-settings-php/includes.php
 tests/behat/behat.yml
 tests/behat/example.local.yml
 tests/behat/features/bootstrap/Drupal/FeatureContext.php
+tests/behat/features/Examples.feature
 tests/phpunit/phpunit.xml
 vendor