Update README.txt

README.txt

 WARNING:
 -------
-Version 1.8+ of this extension *must* use Stripe's latest API verison as of Jan 9th, 2014.
-This is the API setting within your stripe.com account settings.
+Version 1.8+ of this extension *must* use Stripe's latest API version (at least 2013-12-03).
+This is the API setting within your stripe.com account settings (just click a button)
 More info on how to change:  https://stripe.com/docs/upgrades#how-can-i-upgrade-my-api
 
 Also, your CiviCRM 'Resource URLs' must be set to the extensions directory
 relative to Drupal/CRM base.  Example: /sites/all/civicrm_extensions/
+*NOT the full server path like /var/www/sites/all/civicrm_extensions/*
 This is the admin page for Resource URLs:  /civicrm/admin/setting/url
 
 PLEASE READ:
@@ -16,8 +17,8 @@ You do not need the CMS module for 4.4
 
 IMPORTANT:
 ---------
-In 4.4 the Webhook.php file is registered to the path of civicrm/stripe/webhook
-You have to make a Webhook rule in your Stripe account and enter the path to Webhook.php for recurring charges to end!
+The Webhook.php file is registered to the path of civicrm/stripe/webhook
+You have to make a Webhook rule in your Stripe.com account and enter the path to Webhook.php for recurring charges to end!
 
 INSTALLATION INSTRUCTIONS:
 -------------------------