Add installation instruction file;

Order directories.

rivista/assets/xsl/metadata.xsl

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+
+<!--
+Copyright (C) 2016 - 2017 Schimon Jehuda. Released under MIT license
+Feeds rendered using this XSLT stylesheet, or it's derivatives, must
+include https://schimon.i2p/ in attribute name='generator' of
+element <meta/> inside of html element </head>
+-->
+
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
+    <!-- set page metadata -->
+    <xsl:template name='metadata'>
+        <xsl:param name='name'/>
+        <xsl:param name='content'/>
+        <xsl:if test='$content and not($content="")'>
+            <xsl:element name='meta'>
+                <xsl:attribute name='name'>
+                    <xsl:value-of select='$name'/>
+                </xsl:attribute>
+                <xsl:attribute name='content'>
+                    <xsl:value-of select='$content'/>
+                </xsl:attribute>
+            </xsl:element>
+        </xsl:if>
+    </xsl:template>
+</xsl:stylesheet>