README: add v1 deprecation warning
Unfortunately GitHub doesn't support a proper `.. warning::`
directive.
@@ -17,6 +17,13 @@ geopy
geopy is a Python 2 and 3 client for several popular geocoding web
services.
+ Warning
+
+ The 1.x series will not receive any new features or bugfixes
+ unless explicitly asked on the issue tracker.
+
+ Consider upgrading to geopy 2.
+
geopy makes it easy for Python developers to locate the coordinates of
addresses, cities, countries, and landmarks across the globe using
third-party geocoders and other data sources.
