added githublink wordpress plugin

php/githublink/githublink.php

@@ -0,0 +1,41 @@
+<?php
+/*
+Plugin Name: GithubLink
+Plugin URI: http://www.hrupin.com
+Description: This plugin help show source link
+Version: 1.0 BETA
+Author: Igor Khrupin
+Author URI: http://www.hrupin.com
+*/
+
+/*
+DEMO List Posts (Wordpress Plugin)
+Copyright (C) 2014 Igor Khrupin
+Contact me at http://www.hrupin.com
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+add_shortcode("githublink", "githublink_function");
+
+function sourcelink_function($atts) {
+	$image_link = plugin_dir_url( __FILE__ ).'img/gitHub-download-button.png';
+	$alt = 'Download it from github';
+	$width = '230';
+	$height = '70';
+	$url = $atts['url'];
+
+	return '<a href="'.$url.'" target="_blank"><img src="'.$image_link.'" alt="'.$alt.'" width="'.$width.'" height="'.$height.'" class="alignleft size-full wp-image-1595" /></a>';
+}
+?>