Added URL into User-Agent string

CHANGELOG.rst

@@ -2,6 +2,7 @@
 
 Changelog for readability
 ==========================
+- Added User-Agent string into HTTP requests.
 - Added property ``Article.main_text`` for getting text annotated with
   semantic HTML tags (<em>, <strong>, ...).
 - Join node with 1 child of the same type. From

readability/scripts/client.py

@@ -37,7 +37,7 @@ from ..readable import Article
 
 
 HEADERS = {
-    "User-Agent": "Readability (Readable content parser) Version/%s" % __version__,
+    "User-Agent": "Readability (Readable content parser; https://github.com/miso-belica/readability.py) Version/%s" % __version__,
 }