rename Fetcher class, add stub Parser class

controllers/Parse.php

@@ -77,7 +77,7 @@ class Parse {
       $result['url'] = $url;
       $result['code'] = null;
     } else {
-      $fetch = new p3k\XRay\Fetch($this->http);
+      $fetcher = new p3k\XRay\Fetcher($this->http);
 
       $fields = [
         'twitter_api_key','twitter_api_secret','twitter_access_token','twitter_access_token_secret',
@@ -89,7 +89,7 @@ class Parse {
           $opts[$f] = $v;
       }
 
-      $result = $fetch->fetch($url, $opts);
+      $result = $fetcher->fetch($url, $opts);
 
       if(!empty($result['error'])) {
         $error_code = isset($result['error_code']) ? $result['error_code'] : 200;

lib/XRay/Fetch.php → lib/XRay/Fetcher.php

@@ -1,7 +1,7 @@
 <?php
 namespace p3k\XRay;
 
-class Fetch {
+class Fetcher {
   private $http;
 
   public function __construct($http) {
@@ -36,15 +36,18 @@ class Fetch {
     $url = normalize_url($url);
     $host = parse_url($url, PHP_URL_HOST);
 
-    // Check if this is a Twitter URL and if they've provided API credentials, use the API
+    // Check if this is a Twitter URL and use the API
     if(Formats\Twitter::matches_host($url)) {
       return $this->_fetch_tweet($url, $opts);
     }
 
+    // Transform the HTML GitHub URL into an GitHub API request and fetch the API response
     if(Formats\GitHub::matches_host($url)) {
       return $this->_fetch_github($url, $opts);
     }
 
+    // All other URLs are fetched normally
+
     // Special-case appspot.com URLs to not follow redirects.
     // https://cloud.google.com/appengine/docs/php/urlfetch/
     if(!should_follow_redirects($url)) {

lib/XRay/Parser.php

@@ -0,0 +1,12 @@
+<?php
+namespace p3k\XRay;
+
+class Parser {
+
+  public function parse($url, $body) {
+
+    
+    
+  }
+
+}