README in passenger-2.2.2

- old
+ new
@@ -1,12 +1,13 @@
 You might be wondering why the Rack library is vendored, and why we don't
 just depend on the Rack gem. The reason for this is because there are broken
 applications out there that have a hard dependency on rack == 0.4.0 (the
-latest version of Rack is 0.9.1 at the time of writing). If Passenger
+latest version of Rack is 1.0.0 at the time of writing). If Passenger
 depends on the Rack gem, then the application will crash with a gem version
 conflict error upon executing 'gem "rack", "=0.4.0"'.
 
 To fix this conflict, we vendor Rack. When we load our vendored Rack library,
 it won't be registered as a gem, so no RubyGems version conflict exception
-will be raised.
+will be raised. This vendored version is commit 884770528a3, slightly older
+than the 1.0.0 release.
 
-Rack is backwards-compatible so there shouldn't be any problems.
+Rack is mostly backwards-compatible so there shouldn't be any problems.