Python 3.4 and 3.5 compat

Author: HyukjinKwon

dev/gendoc.py

@@ -54,7 +54,11 @@ def get_json(url):
         request = Request(url)
         if GITHUB_OAUTH_KEY:
             request.add_header('Authorization', 'token %s' % GITHUB_OAUTH_KEY)
-        return json.load(urlopen(request))
+
+        response = urlopen(request).read()
+        if isinstance(response, bytes):
+            response = response.decode('utf-8')
+        return json.loads(response)
     except HTTPError as e:
         if "X-RateLimit-Remaining" in e.headers and e.headers["X-RateLimit-Remaining"] == '0':
             print("Exceeded the GitHub API rate limit; see the instructions in " +