Merge pull request #1487 from cmu-delphi/Tina_EpidataAPIhome

Updated Epidata Index (main description page)

Author: nmdefries

docs/index.md

@@ -3,17 +3,16 @@ title: Epidata API Home
 nav_order: 0
 ---
 
-# Delphi's Epidata API
+# The Epidata API
 
 Delphi's Epidata API provides real-time access to epidemiological surveillance data.
 It is built and maintained by the Carnegie Mellon University [Delphi research
 group](https://delphi.cmu.edu/). The Epidata API includes:
 
-- [COVIDcast data](api/covidcast.md), providing daily updates about COVID-19
-  activity across the United States. [API clients](api/covidcast_clients.md) for
-  quick access to COVID data are available.
-- [Data about other diseases](api/README.md), including influenza, dengue, and
-  other diseases tracked by Delphi through various data streams.
+* The [main endpoint (COVIDcast)](api/covidcast.md), providing daily updates about current COVID-19 and influenza activity across the United States.
+* A [variety of other endpoints](api/README.md), providing primarily historical data about various diseases including COVID-19, influenza, dengue fever, and norovirus in several countries.
+
+A [full-featured R client](api/client_libraries.md) is available for quick access to all data. While we continue developing a full-featured Python client, the [legacy Python client](api/client_libraries.md#python) remains available. The main endpoint can also be accessed with a [dedicated COVIDcast client](api/covidcast_clients.md).
 
 Anyone may access the Epidata API anonymously without providing any personal
 data. Anonymous API access is currently rate-limited and restricted to public