documented connection with wxFileSystem

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7608 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/zipstrm.tex

@@ -9,6 +9,13 @@ This class is input stream from ZIP archive. The archive
 must be local file (accessible via FILE*).
 It has all features including GetSize and seeking.
 
+\wxheading{Note}
+
+If you need to enumerate files in ZIP archive, you can use 
+\helpref{wxFileSystem}{wxfilesystem} together with wxZipFSHandler (see 
+\helpref{the overview}{fs}.
+
+
 \wxheading{Derived from}
 
 \helpref{wxInputStream}{wxinputstream}