Updates to 1992/buzzard.2

Rename buzzard.2.README buzzard.2.README.md (perhaps buzzard.2.md would
be better?).

Format fixes in README.md.

1992/buzzard.2/buzzard.2.README.md

@@ -0,0 +1,29 @@
+buzzard.2.README	this file
+buzzard.2.design	description of FIRST (design documentation of THIRD)
+third			implementation of THIRD in FIRST
+help.th			online listing of THIRD primitives
+
+	
+# FIRST demos:
+
+Use  `first < {demo}`.
+
+demo1.1st		prints Hello World! assuming ASCII
+
+# THIRD demos:
+
+Use `cat third {demo} | first`.
+
+demo1.th		prints Hello World! regardless of character set
+demo2.th		demonstrates a simple loop
+demo3.th		demonstrates a simple if test
+demo4.th		recursive factorial calculating on the way up
+demo5.th		recursive factorial calculating on the way down
+demo6.th		demonstrates switching from compiler to execution mode
+
+# Interactive THIRD:
+
+Use `cat third - | first`.
+
+To include the primitive on-line help, use
+`cat third help.th - | first`.