Add a technote for answering questions as they come up. Link to it.

Technotes/QuestionsAnswered.md

@@ -0,0 +1,11 @@
+# Questions Answered
+
+#### How do I delete a feed?
+
+Select it in the sidebar, then hit the Delete key. Or choose Edit > Delete from the menubar.
+
+Note: you can delete multiple feeds, and you can delete folders. You can also undo if you change your mind.
+
+#### Why does Evergreen require the latest macOS?
+
+Since Evergreen is a nights-and-weekends project, we don’t have enough time to run and test on older versions of macOS. Most of the time it will require the most recent macOS.

Technotes/README.md

@@ -10,3 +10,4 @@
 
 [What Development, Alpha, Beta, and Final Mean for Evergreen](DevelopmentAlphaBeta.md)<br />
 [Hidden Preferences](HiddenPrefs.md)
+[Questions Answered](QuestionsAnswered.md)