update librb README to explain the namechange

diff --git a/librb/README b/librb/README.md
similarity index 65%
rename from librb/README
rename to librb/README.md
index 1028021d034547692985b63625b9c498dcee3162..8b25e0e4a40585a2e0098c7aa84a6e6a52cdef7c 100644 (file)
--- a/librb/README
+++ b/librb/README.md
@@ -1,4 +1,9 @@
-This is libircd from ircd-ratbox.  A few notes about this library:
+# librb
+
+This is based on libratbox, the common runtime support code in ircd-ratbox.
+It has significant modifications and is no longer compatible with libratbox itself (nor can be used as a dropin replacement), so we renamed it.
+
+# original libratbox notes
 
 1. Most of this code isn't anywhere near threadsafe at this point.  Don't
    hold your breath on this either.