[PATCH] manpage: update middleware-related documentation

[Eric Wong <normalperson@yhbt.net>]

-N/--no-default-middleware needs a corresponding manpage entry.

Additionally, the Rack::Chunked/ContentLength middleware comment
is out-of-date as of unicorn v4.1.0
---
  Also just pushed this to master of git://bogomips.org/unicorn
  commit 64765b95df06256d39daefdeebde97c874770131

 Documentation/unicorn.1.txt | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/Documentation/unicorn.1.txt b/Documentation/unicorn.1.txt
index c20a570..a42dfff 100644
--- a/Documentation/unicorn.1.txt
+++ b/Documentation/unicorn.1.txt
@@ -61,6 +61,10 @@ with rackup(1) but strongly discouraged.
     For production deployments, specifying the "listen" directive in
     CONFIG_FILE is recommended as it allows fine-tuning of socket
     options.
+-N, \--no-default-middleware
+:   Disables loading middleware implied by RACK_ENV.  This bypasses the
+    configuration documented in the RACK ENVIRONMENT section, but still
+    allows RACK_ENV to be used for application/framework-specific purposes.
 
 # RACKUP COMPATIBILITY OPTIONS
 -o, \--host HOST
@@ -144,10 +148,10 @@ As of Unicorn 0.94.0, RACK_ENV is exported as a process-wide environment
 variable as well.  While not current a part of the Rack specification as
 of Rack 1.0.1, this has become a de facto standard in the Rack world.
 
-Note that the Rack::ContentLength and Rack::Chunked middlewares
-are never loaded by default.  If needed, they should be
-individually specified in the RACKUP_FILE, some frameworks do
-not require them.
+Note the Rack::ContentLength and Rack::Chunked middlewares are also
+loaded by "deployment" and "development", but no other values of
+RACK_ENV.  If needed, they must be individually specified in the
+RACKUP_FILE, some frameworks do not require them.
 
 # ENVIRONMENT VARIABLES
 
-- 
1.8.1.2.422.g08c0e7f

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