Update man pages

doc/h2load.1

 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.45.1.
-.TH H2LOAD "1" "May 2014" "h2load nghttp2/0.4.0" "User Commands"
+.TH H2LOAD "1" "June 2014" "h2load nghttp2/0.4.1" "User Commands"
 .SH NAME
 h2load \- HTTP/2 benchmarking tool
 .SH SYNOPSIS

doc/nghttp.1

 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.45.1.
-.TH NGHTTP "1" "May 2014" "nghttp nghttp2/0.4.0" "User Commands"
+.TH NGHTTP "1" "June 2014" "nghttp nghttp2/0.4.1" "User Commands"
 .SH NAME
 nghttp \- HTTP/2 experimental client
 .SH SYNOPSIS

doc/nghttpd.1

 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.45.1.
-.TH NGHTTPD "1" "May 2014" "nghttpd nghttp2/0.4.0" "User Commands"
+.TH NGHTTPD "1" "June 2014" "nghttpd nghttp2/0.4.1" "User Commands"
 .SH NAME
 nghttpd \- HTTP/2 experimental server
 .SH SYNOPSIS

doc/nghttpx.1

 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.45.1.
-.TH NGHTTPX "1" "May 2014" "nghttpx nghttp2/0.4.0" "User Commands"
+.TH NGHTTPX "1" "June 2014" "nghttpx nghttp2/0.4.1" "User Commands"
 .SH NAME
 nghttpx \- HTTP/2 experimental proxy
 .SH SYNOPSIS
@@ -27,8 +27,10 @@ Set backend host and port.
 Default: '127.0.0.1,80'
 .TP
 \fB\-f\fR, \fB\-\-frontend=\fR<HOST,PORT>
-Set frontend host and port.
-Default: '0.0.0.0,3000'
+Set frontend host and port.  If <HOST> is '*', it
+assumes  all addresses  including  both IPv4  and
+IPv6.
+Default: '*,3000'
 .TP
 \fB\-\-backlog=\fR<NUM>
 Set  listen  backlog  size.    If  \fB\-1\fR  is  given,
@@ -188,12 +190,12 @@ format.  Without  this option, DHE  cipher suites
 are not available.
 .TP
 \fB\-\-npn\-list=\fR<LIST>
-Comma delimited list  of NPN/ALPN protocol sorted
-in  the order  of  preference.   That means  most
-desirable  protocol comes  first.  The  parameter
-must be delimited by a  single comma only and any
-white spaces  are treated  as a part  of protocol
-string.
+Comma delimited list  of ALPN protocol identifier
+sorted in  the order  of preference.   That means
+most  desirable protocol  comes  first.  This  is
+used in both ALPN and NPN.  The parameter must be
+delimited by  a single  comma only and  any white
+spaces are treated as a part of protocol string.
 Default: h2\-12,spdy/3.1,spdy/3,spdy/2,http/1.1
 .TP
 \fB\-\-verify\-client\fR