Merge pull request #10035 from mortada/ecosystem_fredapi

DOC: added fredapi module to ecosystem list

Author: jorisvandenbossche

doc/source/ecosystem.rst

@@ -146,6 +146,15 @@ the European statistics office (Eurostat)
 and the European Central Bank (ECB). Datasets may be returned as pandas Series 
 or multi-indexed DataFrames.   
 
+`fredapi <https://github.com/mortada/fredapi>`_
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+fredapi is a Python interface to the `Federal Reserve Economic Data (FRED) <http://research.stlouisfed.org/fred2/>`__
+provided by the Federal Reserve Bank of St. Louis. It works with both the FRED database and ALFRED database that
+contains point-in-time data (i.e. historic data revisions). fredapi provides a wrapper in python to the FRED
+HTTP API, and also provides several conveninent methods for parsing and analyzing point-in-time data from ALFRED.
+fredapi makes use of pandas and returns data in a Series or DataFrame. This module requires a FRED API key that
+you can obtain for free on the FRED website.
+
 
 .. _ecosystem.domain: