faq: Add documentation for twrp openrecovery script

Should solve: https://github.com/omnirom/android_bootable_recovery/issues/76
	https://github.com/TeamWin/Team-Win-Recovery-Project/issues/708
	https://github.com/TeamWin/Team-Win-Recovery-Project/issues/697

Change-Id: I4f8dba65ec9446b4f899940747756d3bd0595079
diff --git a/_faq/openrecoveryscript.markdown b/_faq/openrecoveryscript.markdown
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+---
+layout: post
+title: "TWRP Commandline Guide"
+---
+<style>
+.command {
+}
+.desc {
+	font-size: smaller;
+}
+</style>
+<div class="home">
+<ul class="page-heading">CLIENT SIDE/SCRIPT</ul>
+<pre class="command"><b>install</b> FILENAME :
+<div class="desc">	install <b>FILENAME</b> zip file.</div>
+
+<b>wipe</b> PARTITION :
+<div class="desc">	format <b>PARTITON</b>, one by line:
+		cache,
+		system,
+		dalvik,
+		data.</div>
+
+<b>backup</b> PARTITIONS-TO-BACKUP [BACKUP-NAME] :
+<div class="desc"> 	backup partition <b>PARTITIONS-TO-BACKUP</b> to [<b>BACKUP-NAME</b>]
+	<b>PARTITIONS-TO-BACKUP</b>, multiples selection allowed:
+		S: system,
+		D: data,
+		C: cache,
+		R: recovery,
+		B: boot,
+		A: and-sec,
+		E: sd-ext,
+		M: skip md5 creation.
+	[<b>BACKUP-NAME</b>] If not provided, current date/time is used.</div>
+
+<b>restore</b> PARTITION-TO-RESTORE BACKUP-NAME :
+<div class="desc"> 	restore <b>PARTITION-TO-RESTORE</b> from existant <b>BACKUP-NAME</b>:
+	<b>PARTITION-TO-RESTORE</b>, multiples selection allowed:
+		S: system,
+		D: data,
+		C: cache,
+		R: recovery,
+		B: boot,
+		A: and-sec,
+		E: sd-ext,
+		M: skip md5 check.
+	<b>BACKUP-NAME</b>: could be full path or name of twrp backup in current twrp backup folder.
+	Backup can't be encrypted.</div>
+
+<b>remountrw</b> :
+<div class="desc"> 	revert <i>/system</i> mount type (read-only/read-write).</div>
+
+<b>mount</b> PATH.
+
+<b>set</b> VARIABLE [VALUE] :
+<div class="desc"> 	set <b>VARIABLE</b> to <b>VALUE</b>. If <b>VALUE</b> is empty, empty <b>VARIABLE</b>.</div>
+
+<b>mkdir</b> DIRECTORY.
+
+<b>reboot</b> [recovery|poweroff|bootloader|download] :
+<div class="desc">	reboot into system (no argument), recovery, bootloader, download mode or turn off device.</div>
+
+<b>sideload</b> :
+<div class="desc">	sideload zip from host adb.</div>
+
+<b>fixperms</b> :
+<div class="desc"> 	launch fix permissions script.</div>
+
+<b>decrypt</b> password :
+<div class="desc"> 	decrypt /data with provided <b>password</b>.</div></pre>
+
+<ul class="page-heading">HOST SIDE</ul>
+<pre class="command"><b>adbbackup</b> :
+<div class="desc">	Use the <i>adb backup</i> command of the host computer to backup the device:
+        adb backup --twrp [compress] [PARTITION-LIST]
+            PARTITION-LIST: partition(s) name(s) without leading '/'. Only partition present into fstab can be backuped.</div>
+
+<b>adbrestore</b>  FILENAME :
+<div class="desc">    Use the <i>adb restore</i> command of the host computer to restore <b>FILENAME</b> where <b>FILENAME</b> is a previously backup taken with <i>adbbackup</i>.</div></pre>