Add 2020/burton/try.sh, improve make test

The make test now uses option -s to show that the output is the same (as
it should be), for better demonstration.

Format/typo check README.md.

2020/burton/try.sh

@@ -0,0 +1,77 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 2020/burton
+#
+
+# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
+# this way allows us to have the user specify a different compiler in an easy
+# way.
+if [[ -z "$CC" ]]; then
+    CC="cc"
+fi
+
+make CC="$CC" all >/dev/null || exit 1
+
+# clear screen after compilation so that only the entry is shown
+clear
+
+echo "$ make test" 1>&2
+make test
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./check_be.sh (Big Endian) (space = next page, q = quit): "
+echo 1>&2
+./check_be.sh | less -rEXF
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./check_le.sh (Little Endian) (space = next page, q = quit): "
+echo 1>&2
+./check_le.sh | less -rEXF
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./prog 128: "
+echo 1>&2
+./prog 128
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./prog_le 128: "
+echo 1>&2
+./prog_le 128
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./prog_be 128: "
+echo 1>&2
+./prog_be 128
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./prog 170: "
+echo 1>&2
+./prog 170
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./prog 85: "
+echo 1>&2
+./prog 85
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./prog 128 128: "
+echo 1>&2
+./prog 128 128
+echo 1>&2
+echo "Why did that print strange output?"
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./prog 128 128 128: "
+echo 1>&2
+./prog 128 128 128
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./prog 128 128 128 128: "
+echo 1>&2
+./prog 128 128 128 128
+echo "Why did that print strange output?"
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./prog 1; ./prog_be 1: "
+echo 1>&2
+./prog 1; ./prog_be 1