Merge pull request #10 from earnjam/fix/readme-method-name

Correct opt-in method name in Readme docs

README.md

@@ -74,7 +74,7 @@ $user->notify(new InvoicePaid($invoice)); //This won't get sent.
 
 By default, all notifications will be sent if no subscribe/unsubscribe record is found. This means you don't need to explicitly **subscribe** a user to a notification, you only need to **unsubscribe** them.
 
-In some cases, however, you'd like to create opt-in notifications. To do so, modify your notification class and add a function called `getOptInChannels`:
+In some cases, however, you'd like to create opt-in notifications. To do so, modify your notification class and add a function called `getOptInSubscriptions`:
 
 ```php
 <?php
@@ -90,7 +90,7 @@ class InvoicePaid extends Notification
         return ['mail', 'sms'];
     }
 
-    public function getOptInChannels()
+    public function getOptInSubscriptions()
     {
         return ['sms'];
     }
@@ -280,4 +280,4 @@ The package uses the following logic to resolve whether or not to send a notific
    3b. If there is a record, send the notification based on the status of the subscription (subscribed or unsubscribed).
 
 ## License
-Released under the [MIT](https://choosealicense.com/licenses/mit/) license. See [LICENSE](LICENSE.md) for more information.
+Released under the [MIT](https://choosealicense.com/licenses/mit/) license. See [LICENSE](LICENSE.md) for more information.