Update man pages

doc/h2load.1

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-.TH "H2LOAD" "1" "February 15, 2015" "0.7.4" "nghttp2"
+.TH "H2LOAD" "1" "February 22, 2015" "0.7.5-DEV" "nghttp2"
 .SH NAME
 h2load \- HTTP/2 benchmarking tool
 .

doc/nghttp.1

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-.TH "NGHTTP" "1" "February 15, 2015" "0.7.4" "nghttp2"
+.TH "NGHTTP" "1" "February 22, 2015" "0.7.5-DEV" "nghttp2"
 .SH NAME
 nghttp \- HTTP/2 experimental client
 .

doc/nghttpd.1

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-.TH "NGHTTPD" "1" "February 15, 2015" "0.7.4" "nghttp2"
+.TH "NGHTTPD" "1" "February 22, 2015" "0.7.5-DEV" "nghttp2"
 .SH NAME
 nghttpd \- HTTP/2 experimental server
 .

doc/nghttpx.1

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-.TH "NGHTTPX" "1" "February 15, 2015" "0.7.4" "nghttp2"
+.TH "NGHTTPX" "1" "February 22, 2015" "0.7.5-DEV" "nghttp2"
 .SH NAME
 nghttpx \- HTTP/2 experimental proxy
 .
@@ -59,7 +59,9 @@ Set backend host and port.  For HTTP/1 backend, multiple
 backend addresses are accepted by repeating this option.
 HTTP/2  backend   does  not  support   multiple  backend
 addresses  and the  first occurrence  of this  option is
-used.
+used.  UNIX domain socket  can be specified by prefixing
+path        name        with       "unix:"        (e.g.,
+\fI\-bunix\fP:/var/run/backend.sock)
 .sp
 Default: \fB127.0.0.1,80\fP
 .UNINDENT
@@ -67,7 +69,9 @@ Default: \fB127.0.0.1,80\fP
 .TP
 .B \-f, \-\-frontend=<HOST,PORT>
 Set  frontend  host and  port.   If  <HOST> is  \(aq*\(aq,  it
-assumes all addresses including both IPv4 and IPv6.
+assumes  all addresses  including  both  IPv4 and  IPv6.
+UNIX domain  socket can  be specified by  prefixing path
+name with "unix:" (e.g., \fI\-funix\fP:/var/run/nghttpx.sock)
 .sp
 Default: \fB*,3000\fP
 .UNINDENT
@@ -365,7 +369,7 @@ NPN.  The parameter must be  delimited by a single comma
 only  and any  white spaces  are  treated as  a part  of
 protocol string.
 .sp
-Default: \fBh2\-16,h2\-14,spdy/3.1,http/1.1\fP
+Default: \fBh2,h2\-16,h2\-14,spdy/3.1,http/1.1\fP
 .UNINDENT
 .INDENT 0.0
 .TP

doc/nghttpx.1.rst

@@ -38,14 +38,18 @@ Connections
     backend addresses are accepted by repeating this option.
     HTTP/2  backend   does  not  support   multiple  backend
     addresses  and the  first occurrence  of this  option is
-    used.
+    used.  UNIX domain socket  can be specified by prefixing
+    path        name        with       "unix:"        (e.g.,
+    :option:`-bunix`\:/var/run/backend.sock)
 
     Default: ``127.0.0.1,80``
 
 .. option:: -f, --frontend=<HOST,PORT>
 
     Set  frontend  host and  port.   If  <HOST> is  '\*',  it
-    assumes all addresses including both IPv4 and IPv6.
+    assumes  all addresses  including  both  IPv4 and  IPv6.
+    UNIX domain  socket can  be specified by  prefixing path
+    name with "unix:" (e.g., :option:`-funix`\:/var/run/nghttpx.sock)
 
     Default: ``*,3000``
 
@@ -316,7 +320,7 @@ SSL/TLS
     only  and any  white spaces  are  treated as  a part  of
     protocol string.
 
-    Default: ``h2-16,h2-14,spdy/3.1,http/1.1``
+    Default: ``h2,h2-16,h2-14,spdy/3.1,http/1.1``
 
 .. option:: --verify-client