[PATCH] README: reference yahns

[PATCH] README: reference yahns

[Eric Wong]

Because nobody has time to read about all the options Rainbows!
provides.  yahns is basically XEpollThreadPool, with minor
improvements which weren't easily supportable with other
concurrency options.
---
 README | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README b/README
index 174253b..4ab955c 100644
--- a/README
+++ b/README
@@ -4,6 +4,10 @@
 unicorn, but designed to handle applications that expect long
 request/response times and/or slow clients.
 
+If you're on GNU/Linux and overwhelmed by options in \Rainbows!,
+consider {yahns}[http://yahns.yhbt.net/] as it has fewer options
+and more energy-efficient during non-peak traffic.
+
 For Rack applications not heavily bound by slow external network
 dependencies, consider unicorn instead as it simpler and easier to
 debug.
-- 
EW