add getInfo

lib/crawlerClient.js

@@ -156,6 +156,23 @@ class CrawlerClient {
     });
     return deferred.promise;
   }
+
+  getInfo(queueName) {
+    const deferred = Q.defer();
+    request.get(`${this.url}/queues/${queueName}/info`, {
+      headers: {
+        'X-token': this.authToken
+      },
+      json: true
+    }, (error, response, body) => {
+      if (error || response.statusCode > 299) {
+        return deferred.reject(new Error(`Failed to get info for queue ${queueName}: ${error ? error.message : body.message}.`));
+      }
+      deferred.resolve(body);
+    });
+    return deferred.promise;
+  }
+
 }
 
 module.exports = CrawlerClient;