Add 1992/nathan/try.sh + format fixes

The try.sh script runs the commands provided by the judges in the try
section (which has been updated to just refer to './try.sh') and one I
included as well.

The README.md file has been format/typo checked.

1992/nathan/try.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+
+echo "$ ./nathan obfuscate < nathan.c > foobarf.c" 1>&2
+./nathan obfuscate < nathan.c > foobarf.c
+
+echo "$ ./nathan - obfuscate < foobarf.c > barfoof.c" 1>&2
+./nathan - obfuscate < foobarf.c > barfoof.c
+
+echo "$ diff nathan.c barfoof.c" 1>&2
+diff -s nathan.c barfoof.c
+
+echo "$ echo 'IOCCC 1992 winner nathan' | ./nathan" 1>&2
+echo 'IOCCC 1992 winner nathan' | ./nathan