Add 1987/wall/try.sh

This script automates through a pipeline some of the input suggested in
the README.md. The README.md still has some of what try.sh has because
it shows that you can do it entering line by line.

thanks-for-help.md

@@ -576,6 +576,8 @@ size constraints of the contest).
 
 [Cody](#cody) made this use `fgets(3)`.
 
+Cody also added the [try.sh](1987/wall/try.sh) script.
+
 
 ## <a name="1987_westley"></a>[1987/westley](/1987/westley/westley.c) ([README.md](/1987/westley/README.md]))