Fix usage of id_range

Author: benjhar

README.md

@@ -3,7 +3,7 @@
 Just frickin
 
 ```python
-  from main import Jokes
+  from jokeapi import Jokes
 
   j = Jokes()
   joke = j.get_joke()

jokeapi/main.py

@@ -60,8 +60,8 @@ def build_request(
                 search_string = urllib.parse.quote(search_string)
         if id_range:
 
-            r = self.http.request('GET', "https://sv443.net/jokeapi/v2/info")
-            dict = json.loads(r.data)
+            response = self.http.request('GET', "https://sv443.net/jokeapi/v2/info")
+            dict = json.loads(response.data)
             range_limit = dict["jokes"]["totalCount"]
 
             if len(id_range) > 2: