Add 2020/otterness/try.sh

The .gitignore was updated but it cannot be sorted because it excludes
'*.mid' but then negates the .mid files in the repo, cvikl.mid and
entertainer.mid. These have to come after the exclusion of '*.mid'. This
is important as one might use the entry to create a .mid file that is
not done in the try script. The make clobber rule does not remove
'*.mid' files as doing so would remove the ones we want to keep.

thanks-for-help.md

@@ -4872,6 +4872,8 @@ J.R.R. Tolkien).
 that one need not download them and to make sure they can always be obtained
 even if the domain or link goes dead.
 
+Cody also added the [try.sh](/2020/otterness/try.sh) script.
+
 
 ## <a name="2020_tsoj"></a>[2020/tsoj](/2020/tsoj/prog.c) ([README.md](/2020/tsoj/README.md))