Add 1991/brnstnd/try.sh and try.txt

The try.txt is a file for the rot13 SORTA file. All but one of the
sorta.* files is used. The only one that is not prints out a verr long
line of output and would flood the screen. The try section in the
README.md does suggest one try it just to be complete.

thanks-for-help.md

@@ -1177,6 +1177,9 @@ invalid operands to binary expressions were resolved with the comma operator.
 Later on, Cody added back the macro `#define D define` to make it look ever so
 slightly more like the original, even though it's unused.
 
+Cody also added the [try.sh](/1991/brnstnd/try.sh) script and
+[try.txt](/1991/brnstnd/try.txt) which the script uses.
+
 
 ## <a name="1991_buzzard"></a>[1991/buzzard](/1991/buzzard/buzzard.c) ([README.md](/1991/buzzard/README.md]))