doc: Adding generate listpayments man page

doc/lightning-listpayments.7

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+'\" t
+.\"     Title: lightning-listpayments
+.\"    Author: [see the "AUTHOR" section]
+.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
+.\"      Date: 01/18/2018
+.\"    Manual: \ \&
+.\"    Source: \ \&
+.\"  Language: English
+.\"
+.TH "LIGHTNING\-LISTPAYME" "7" "01/18/2018" "\ \&" "\ \&"
+.\" -----------------------------------------------------------------
+.\" * Define some portability stuff
+.\" -----------------------------------------------------------------
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.\" http://bugs.debian.org/507673
+.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.ie \n(.g .ds Aq \(aq
+.el       .ds Aq '
+.\" -----------------------------------------------------------------
+.\" * set default formatting
+.\" -----------------------------------------------------------------
+.\" disable hyphenation
+.nh
+.\" disable justification (adjust text to left margin only)
+.ad l
+.\" -----------------------------------------------------------------
+.\" * MAIN CONTENT STARTS HERE *
+.\" -----------------------------------------------------------------
+.SH "NAME"
+lightning-listpayments \- Protocol for querying payment status
+.SH "SYNOPSIS"
+.sp
+\fBlistpayments\fR
+.SH "DESCRIPTION"
+.sp
+The \fBlistpayments\fR RPC command gets the status of all \fIpay\fR and \fIsendpay\fR commands\&.
+.SH "RETURN VALUE"
+.sp
+On success, an array of objects is returned\&. Each object contains an \fIid\fR (unique internal value assigned at creation), \fIpayment_hash\fR, \fIdestination\fR, \fImsatoshi\fR and \fItimestamp\fR (UNIX timestamp indicating when it was initiated), and a \fIstatus\fR which is one of \fIpending\fR (in progress), \fIcomplete\fR (successfully paid) or \fIfailed\fR\&.
+.SH "AUTHOR"
+.sp
+Christian Decker <decker\&.christian@gmail\&.com> is mainly responsible\&.
+.SH "SEE ALSO"
+.sp
+lightning\-pay(7), lightning\-sendpay(7), lightning\-listinvoice(7)\&.
+.SH "RESOURCES"
+.sp
+Main web site: https://github\&.com/ElementsProject/lightning