First shot at browser-based tests

Very incomplete, but hopefully is a useful start.

README.md

@@ -100,6 +100,8 @@ Tests can be run most easily via an installation made through CiviCRM Buildkit (
     phpunit4 tests/phpunit/CRM/Stripe/IpnTest.php
     phpunit4 tests/phpunit/CRM/Stripe/DirectTest.php
 
+In addition, see the test/katalon folder for instructions on running full web-browser based automation tests.
+
 #### The following manual tests should also be run:
 
 1. Test webform submission with payment and user-select, single processor.

tests/katalon/README.md

+# Katalon Test Suite
+
+The CiviCRM Stripe Katalon test suite automatically runs through a series of standard credit card operations using the [Katalon Firefox extension](https://addons.mozilla.org/mn/firefox/addon/katalon-automation-record/).
+
+To test using Katalon, follow these steps:
+
+ * Install the [Katalon Firefox extension](https://addons.mozilla.org/mn/firefox/addon/katalon-automation-record/).
+ * Install CiviCRM/Drupal using [CiviCRM Buildkit](https://docs.civicrm.org/dev/en/latest/tools/buildkit/) or otherwise run a Drupal CiviCRM installation via http://localhost:8001.
+ * Add com.drastikbydesign.stripe in the sites/files/civicrm/ext folder.
+ * Install and enable the webform and webform_civicrm modules (ensure webform_civicrm is patched for stripe).
+ * Open Katalon in your Firefox Browser
+ * Click the + symbol next to "Test Suites"
+ * Navigate to this folder and select the file: civicrm-stripe-test-suite.html
+ * Play each test (in order).
+
+