Updated all plugins that are non-forked. Added some new plugins.

Added update_plugins.py which can fetch new plugins from GitHub.

New plugins added: zencoding, vim-indent-object, taglist, nginx.vim

sources_non_forked/snipmate-snippets/zend/clac.snippet

@@ -0,0 +1,20 @@
+<?php
+
+/**
+ * $1Controller
+ * @package       ${2}
+ * @author        ${3:`g:snips_author`}
+ * @copyright     (c) `strftime("%Y")`
+ */
+class ${1:Index}Controller extends Application_Controller
+{
+	/**
+	 * indexAction
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function indexAction(){
+		${4:// some code}
+	}
+}