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-This is the source code repository for ERFA (Essential Routines for
-Fundamental Astronomy).  ERFA is a C library containing key algorithms for
-astronomy, and is based on the `SOFA library <http://www.iausofa.org/>`_ published by the International
-Astronomical Union (IAU).
-
-ERFA is intended to replicate the functionality of SOFA (aside from possible
-bugfixes in ERFA that have not yet been included in SOFA), but is licensed
-under a three-clause BSD license to enable its compatibility with a wide
-range of open source licenses. Permission for this release has been
-obtained from the SOFA board, and is avilable in the ``LICENSE`` file included
-in this source distribution.
-
-Differences from SOFA
----------------------
-
-This version of ERFA (v1.3.0) is based on SOFA version "20160503_a", with the
-differences outlined below.
-
-ERFA branding
-^^^^^^^^^^^^^
-
-All references to "SOFA" in the source code have been changed to ERFA, and
-functions have the prefix ``era`` instead of ``iau``.
-
-C macro prefixes
-^^^^^^^^^^^^^^^^
-
-All C macros used in ERFA are the same as their SOFA equivalents, but with an
-``ERFA_`` prefix to prevent namespace collisions.
-
-Bugfixes
-^^^^^^^^
-
-ERFA includes smaller changes that may or may not eventually make it into SOFA,
-addressing localized bugs or similar smaller issues:
-
-* ERFA 1.3.0 and SOFA "20160503_a"
-
-  + There are no differences between ERFA 1.3.0 and SOFA "20160503_a".
-
-* ERFA 1.2.0 and SOFA "20150209_a"
-
-  + Typos have been corrected in the documentation of atco13 and atio13 (see https://github.com/liberfa/erfa/issues/29).
-
-Note that issues identified in ERFA should generally also be reported upstream to SOFA at sofa@ukho.gov.uk.
-
-Building and installing ERFA
-----------------------------
-
-To build and install a released version of ERFA in your OS's standard
-location, simply do::
-
-    ./configure
-    make
-    make install
-
-If you want to run the tests to make sure ERFA built correctly, before
-installing do::
-
-    make check
-
-
-For developers
-^^^^^^^^^^^^^^
-
-If you are using a developer version from github, you will need to first do
-``./bootstrap.sh`` before the above commands. This requires ``autoconf`` and
-``libtool``.
-
-If you wish to build against the ERFA static library without installing, you
-will find it in ``$ERFAROOT/src/.libs/liberfa.a`` after running ``make``.
-
-Creating a single-file version of the source code
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Alternatively, if you wish to bundle the ERFA source code with a separate
-package, you can use the ``source_flattener.py`` script from the
-`erfa-fetch repository`_ to combine
-the ERFA source code into just two files: a ``erfa.c`` source file, and an
-``erfa.h`` include file.  You should run this script like this::
-
-    cd /path/to/erfa-source-code
-    python /path/to/erfa-fetch/source_flattener.py src -n erfa
-
-If possible, however, it is recommended that you provide an option to use any
-copy of the ERFA library that is already installed on the system.
-
-Travis build status
--------------------
-.. image:: https://travis-ci.org/liberfa/erfa.png
-    :target: https://travis-ci.org/liberfa/erfa
-
-.. _erfa-fetch repository: https://github.com/liberfa/erfa-fetch