Refactored Recaptcha plugin to use addPlugin()

Also nicer log messages

plugins/Recaptcha/README

@@ -0,0 +1,28 @@
+StatusNet reCAPTCHA plugin 0.3 11/16/09
+=======================================
+Adds a captcha to your registration page to reduce automated spam bots registering.
+
+Use:
+1. Get an API key from http://recaptcha.net
+
+2. In config.php add:
+addPlugin('recaptcha', array('private_key' => 'YourKeyHere',
+                              'public_key' => 'ReplaceWithYourKey'));
+or
+addPlugin('recaptcha', array('private_key' => 'YourKeyHere',
+                              'public_key' => 'ReplaceWithYourKey',
+                              'display_errors' => true));
+Changelog
+=========
+0.1 initial release
+0.2 Work around for webkit browsers
+0.3 Moved to new plugin arch for SN
+    **YOU WILL NEED TO CHANGE YOUR CONFIG.PHP!**
+
+reCAPTCHA Lib README
+====================
+
+The reCAPTCHA PHP Lirary helps you use the reCAPTCHA API. Documentation
+for this library can be found at
+
+	http://recaptcha.net/plugins/php

plugins/Recaptcha/RecaptchaPlugin.php

@@ -33,7 +33,9 @@ if (!defined('STATUSNET') && !defined('LACONICA')) {
 
 define('RECAPTCHA', '0.2');
 
-class recaptcha extends Plugin
+require_once(INSTALLDIR.'/plugins/Recaptcha/recaptchalib.php');
+
+class RecaptchaPlugin extends Plugin
 {
     var $private_key;
     var $public_key;
@@ -41,13 +43,13 @@ class recaptcha extends Plugin
     var $failed;
     var $ssl;
 
-    function __construct($public_key, $private_key, $display_errors=false)
-    {
-        parent::__construct();
-        require_once(INSTALLDIR.'/plugins/recaptcha/recaptchalib.php');
-        $this->public_key = $public_key;
-        $this->private_key = $private_key; 
-        $this->display_errors = $display_errors;
+    function onInitializePlugin(){
+        if(!isset($this->private_key)){
+            common_log(LOG_ERR, "Recaptcha: Must specify private_key in config.php");
+        }
+        if(!isset($this->public_key)){
+            common_log(LOG_ERR, "Recaptcha: Must specify public_key in config.php");
+        }
     }
 
     function checkssl(){

plugins/recaptcha/README

@@ -1,23 +0,0 @@
-StatusNet reCAPTCHA plugin 0.2 8/3/09
-====================================
-Adds a captcha to your registration page to reduce automated spam bots registering.
-
-Use:
-1. Get an API key from http://recaptcha.net
-
-2. In config.php add:
-include_once('plugins/recaptcha/recaptcha.php');
-$captcha = new recaptcha(publickey, privatekey, showErrors);
-
-Changelog
-=========
-0.1 initial release
-0.2 Work around for webkit browsers
-
-reCAPTCHA README
-================
-
-The reCAPTCHA PHP Lirary helps you use the reCAPTCHA API. Documentation
-for this library can be found at
-
-	http://recaptcha.net/plugins/php