RtNotificationsTest.java:42-43: Create a test fetchSingleNotification...

The puzzle `920-268906e9` in [`src/test/java/com/jcabi/github/RtNotificationsTest.java`](https://github.com/jcabi/jcabi-github/blob/master/src/test/java/com/jcabi/github/RtNotificationsTest.java) (lines 42-43) has to be resolved: Create a test fetchSingleNotification and implement get() operation in RtNotifications.

The puzzle was created by Piotr Pradzynski on 10-Oct-15.

Estimate: 30 minutes, role: IMP.

If you have any technical questions, don't ask me, submit new tickets instead. The task will be "done" when the problem is fixed and the text of the puzzle is removed from the source code. Here is more about [PDD](http://www.yegor256.com/2009/03/04/pdd.html).