~xkcd command now finds relevant XKCDs when given text instead of a number

modules/link/link.js

@@ -109,6 +109,30 @@ var link = function(dbot) {
                         }
                     } catch(err) { };
                 });    
+            } else {
+                if (isNaN(parseInt(comicId))) {
+                    var relevantUrl = 'https://relevantxkcd.appspot.com/process';
+                    request({
+                        url: relevantUrl,
+                        qs: {
+                            action:'xkcd',
+                            query: comicId
+                        }
+                    }, function(err, res, body) {
+                        comicId = body.split(' ').slice(2)[0].trim();
+
+                        var link = "http://xkcd.com/"+comicId+"/info.0.json";
+                        request(link,  function(error, response, body) {
+                            try {
+                                if (response.statusCode == "200") {
+                                    data = JSON.parse(body);
+                                    event.reply(dbot.t("xkcd", data));
+                                } else {
+                                    event.reply(dbot.t("no-hits"));
+                                }
+                            } catch(err) { };
+                        });
+                    });
                 } else {
                     if(comicId !== "") {
                         comicId = comicId + "/";
@@ -126,7 +150,7 @@ var link = function(dbot) {
                         } catch(err) { };
                     });
                 }
-            
+            }
         },
         
         '~ud': function(event) {