[Technical Recommendations] Recommend testing sites

Technical-Recommendations.md

@@ -1 +1,27 @@
-* Bridges should make use of [HTTPS](https://en.wikipedia.org/wiki/HTTPS) (`https://...`) over [HTTP](https://en.wikipedia.org/wiki/HTTPS) (`http://...`) where possible
+## General recommendations
+
+* Make use of [HTTPS](https://en.wikipedia.org/wiki/HTTPS) (`https://...`) over [HTTP](https://en.wikipedia.org/wiki/HTTPS) (`http://...`) where possible
+
+## Test a site before building a bridge
+Some sites make use of anti-bot mechanisms (e.g.: by using JavaScript) in which case they work fine in regular browsers, but not in the PHP environment. To check if a site works with RSS-Bridge just create a new bridge using the [template](https://github.com/RSS-Bridge/rss-bridge/wiki/BridgeAbstract#template) and load a valid URL (not the base URL!).
+
+**Example (using github.com)**
+
+```PHP
+<?php
+class TestBridge extends BridgeAbstract {
+	const NAME = 'Unnamed bridge';
+	const URI = '';
+	const DESCRIPTION = 'No description provided';
+	const MAINTAINER = 'No maintainer';
+	const PARAMETERS = array();
+	const CACHE_TIMEOUT = 3600;
+
+	public function collectData(){
+		$html = getSimpleHTMLDOM('https://github.com/rss-bridge/rss-bridge')
+			or returnServerError('No contents received!');
+	}
+}
+```
+
+This bridge should return an empty page (HTML format)