diff -r 000000000000 -r 6474c204b198 js/jsd/README
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/jsd/README	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,6 @@
+js/jsd contains code for debugging support for the C-based JavaScript engine 
+in js/src.  jsd_xpc.cpp provides an XPCOM binding for the library.
+
+js/jsd/jsdb is a console debugger using only native code (see README in that 
+directory.)  This debugger is no longer being actively developed, though it
+should work.