Add unicode interpretation; add example for cached VideoCardz feed

examples/feed-cached.php

@@ -0,0 +1,13 @@
+<?php
+$command = "/usr/local/bin/backtone";
+$argument = "BASE64ENCODEDINPUTXML";
+$cacheFile = __DIR__ . "/cache/feed.xml";
+$tempFile = "/tmp/feed.xml" . ".tmp";
+
+// serve cached file immediately
+header("Content-Type: application/xml; charset=utf-8");
+readfile($cacheFile);
+
+// trigger background regeneration
+exec(escapeshellcmd($command) . " " . escapeshellarg($argument) . " > " . escapeshellarg($tempFile) . " 2>&1 && mv " . escapeshellarg($tempFile) . " " . escapeshellarg($cacheFile) . " &");
+?>

examples/input_xmls/videocardz-scrape.xml

@@ -0,0 +1,26 @@
+<input>
+    <flareSolverrEndpoint>http://PLACEHOLDER:8191/v1</flareSolverrEndpoint>
+    <regex
+    ><![CDATA[<item>.*?<title>(.*?)<\/title>.*?<link>(.*?)<\/link>.*?<description><!\[CDATA\[ (.*?)<br\/>]]></regex>
+    <loadSeconds>0</loadSeconds>
+    <maxFeedItems>10</maxFeedItems>
+    <feed>
+        <title>
+            <parent>VideoCardz</parent>
+                <captureGroupIndex>1</captureGroupIndex>
+        </title>
+        <link><parent>https://videocardz.com/rss-feed</parent>
+            <captureGroupIndex>2</captureGroupIndex>
+        </link>
+        <description>
+            <parent>Official RSS Feed from VideoCardz.com translated to Atom.</parent>
+            <captureGroupIndex>3</captureGroupIndex>
+        </description>
+        <authorName>
+            <parent>VideoCardz.com</parent>
+        </authorName>
+        <authorEmail>
+            <parent>maciej+rssfeed@videocardz.com</parent>
+        </authorEmail>
+    </feed>
+</input>