Update manual pages

doc/h2load.1

 .\" Man page generated from reStructuredText.
 .
-.TH "H2LOAD" "1" "Mar 27, 2017" "1.21.0" "nghttp2"
+.TH "H2LOAD" "1" "Apr 06, 2017" "1.22.0-DEV" "nghttp2"
 .SH NAME
 h2load \- HTTP/2 benchmarking tool
 .

doc/nghttp.1

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-.TH "NGHTTP" "1" "Mar 27, 2017" "1.21.0" "nghttp2"
+.TH "NGHTTP" "1" "Apr 06, 2017" "1.22.0-DEV" "nghttp2"
 .SH NAME
 nghttp \- HTTP/2 client
 .

doc/nghttpd.1

 .\" Man page generated from reStructuredText.
 .
-.TH "NGHTTPD" "1" "Mar 27, 2017" "1.21.0" "nghttp2"
+.TH "NGHTTPD" "1" "Apr 06, 2017" "1.22.0-DEV" "nghttp2"
 .SH NAME
 nghttpd \- HTTP/2 server
 .

doc/nghttpx.1

 .\" Man page generated from reStructuredText.
 .
-.TH "NGHTTPX" "1" "Mar 27, 2017" "1.21.0" "nghttp2"
+.TH "NGHTTPX" "1" "Apr 06, 2017" "1.22.0-DEV" "nghttp2"
 .SH NAME
 nghttpx \- HTTP/2 proxy
 .
@@ -1207,6 +1207,18 @@ requests.
 .UNINDENT
 .INDENT 0.0
 .TP
+.B \-\-add\-x\-forwarded\-proto
+Append  X\-Forwarded\-Proto header  field  to the  backend
+request.
+.UNINDENT
+.INDENT 0.0
+.TP
+.B \-\-strip\-incoming\-x\-forwarded\-proto
+Strip X\-Forwarded\-Proto header field from inbound client
+requests.
+.UNINDENT
+.INDENT 0.0
+.TP
 .B \-\-add\-forwarded=<LIST>
 Append RFC  7239 Forwarded header field  with parameters
 specified in comma delimited list <LIST>.  The supported
@@ -1460,6 +1472,17 @@ Set path to save PID of this program.
 Run this program as <USER>.   This option is intended to
 be used to drop root privileges.
 .UNINDENT
+.INDENT 0.0
+.TP
+.B \-\-single\-process
+Run this program in a  single process mode for debugging
+purpose.  Without this option,  nghttpx creates at least
+2  processes:  master  and worker  processes.   If  this
+option is  used, master  and worker  are unified  into a
+single process.  nghttpx still spawns additional process
+if neverbleed is used.  In  the single process mode, the
+signal handling feature is disabled.
+.UNINDENT
 .SS Scripting
 .INDENT 0.0
 .TP

doc/nghttpx.1.rst

@@ -1094,6 +1094,16 @@ HTTP
     Strip X-Forwarded-For  header field from  inbound client
     requests.
 
+.. option:: --add-x-forwarded-proto
+
+    Append  X-Forwarded-Proto header  field  to the  backend
+    request.
+
+.. option:: --strip-incoming-x-forwarded-proto
+
+    Strip X-Forwarded-Proto header field from inbound client
+    requests.
+
 .. option:: --add-forwarded=<LIST>
 
     Append RFC  7239 Forwarded header field  with parameters
@@ -1332,6 +1342,16 @@ Process
     Run this program as <USER>.   This option is intended to
     be used to drop root privileges.
 
+.. option:: --single-process
+
+    Run this program in a  single process mode for debugging
+    purpose.  Without this option,  nghttpx creates at least
+    2  processes:  master  and worker  processes.   If  this
+    option is  used, master  and worker  are unified  into a
+    single process.  nghttpx still spawns additional process
+    if neverbleed is used.  In  the single process mode, the
+    signal handling feature is disabled.
+
 
 Scripting
 ~~~~~~~~~