Add new spider for aitopics.org

exa/exa/spiders/aitop.py

+# -*- coding: utf-8 -*-
+import scrapy
+
+
+class AitopSpider(scrapy.Spider):
+    name = "aitop"
+    allowed_domains = ["aitopics.org"]
+    start_urls = ['http://aitopics.org/']
+
+    def parse(self, response):
+        pass