[GithubSearchBridge] Added github search bridge (#500)

* [GithubSearchBridge] Added github search bridge, only repos search atm

bridges/GithubSearchBridge.php

@@ -0,0 +1,51 @@
+<?php
+class GithubSearchBridge extends BridgeAbstract {
+
+	const MAINTAINER = 'corenting';
+	const NAME = 'Github Repositories Search';
+	const URI = 'https://github.com/';
+	const CACHE_TIMEOUT = 600; // 10min
+	const DESCRIPTION = 'Returns a specified repositories search (sorted by recently updated)';
+	const PARAMETERS = array( array(
+		's' => array(
+			'type' => 'text',
+			'name' => 'Search query'
+		)
+	));
+
+	public function collectData(){
+		$params = array('utf8' => '✓',
+										'q' => urlencode($this->getInput('s')),
+										's' => 'updated',
+										'o' => 'desc',
+										'type' => 'Repositories');
+		$url = self::URI . 'search?' . http_build_query($params);
+
+		$html = getSimpleHTMLDOM($url)
+			or returnServerError('Error while downloading the website content');
+
+		foreach($html->find('div.repo-list-item') as $element){
+			$item = array();
+
+			$uri = $element->find('h3 a', 0)->href;
+			$uri = substr(self::URI, 0, -1) . $uri;
+			$item['uri'] = $uri;
+
+			$title = $element->find('h3', 0)->plaintext;
+			$item['title'] = $title;
+
+			if (count($element->find('p')) == 2){
+				$content = $element->find('p', 0)->innertext;
+			}
+			else{
+				$content = '';
+			}
+			$item['content'] = $content;
+
+			$date = $element->find('relative-time', 0)->datetime;
+			$item['timestamp'] = strtotime($date);
+
+			$this->items[] = $item;
+		}
+	}
+}