Apply main docstring

99bottles.sh

@@ -1,7 +1,20 @@
 #!/bin/bash
-#A way-overcomplicated implementation of the bottles
-# of beer song in bash.
-#Optional argument: --careless   Generate the "happen to fall" version
+
+#
+# Bottles of Beer song in Bash
+#
+# A way-overcomplicated implementation of the bottles of beer song in bash.
+# Optional argument:
+#
+#  *  `--careless` - Generate the "happen to fall" version
+#
+# NOTE:  This is an altered version of a "99 bottles of beer" song
+# Bash script by Bill Brown.  The intent of the altered version is
+# to show the style, so the above text is preserved from [the
+# original][99b].
+#
+#   [99b]: http://99-bottles-of-beer.net/language-bash-1831.html
+#
 
 standardBreakLine="Take one down and pass it around"
 wastefulBreakLine="If one of those bottles should happen to fall"