examples/README.ytfeed: expand

examples/README.ytfeed

@@ -27,3 +27,18 @@ distributions come with Python 3 and it's one of few languages with XML parsing
 as part of the standard library - I figured it'd be less hassle than vendoring
 a dependency or (woe be unto those who think it) relying on whatever awful
 package managers the user has installed.
+
+ytfeed's API (use of stdin and argv) is not finalized and will likely change.
+
+At some point I'd like to refactor the project to be able to do something like
+```
+$ ytfeed.browse-feeds \
+	| menu \
+	| ytfeed.browse-feed \
+	| menu \
+	| ytfeed.browse-entry \
+	| menu
+```
+because I find long pipelines to be satisfying. Also, the Python programs would
+benefit from sharing code rather than duplicating it (just a few functions - I
+promise!).