removed stale description about parkinglot

git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@1397 e5f2f494-b856-4b98-b285-d166d9295462

README

@@ -1,8 +1,4 @@
-This is the source for the BIND 10 testing branch known as
-the parkinglot. This is a simple authoritative server used
-to provide identical records for many zones, such as in
-a DNS parking service.
-
+This is the source for a pre-alpha version of BIND 10.
 
 BUILDING