Add links to API docs

README.md

@@ -1,6 +1,6 @@
 # AMR-Wind 
 
-[Website](https://www.exawind.org/) | [Documentation](https://amr-wind.readthedocs.io) | [Nightly test dashboard](http://my.cdash.org/index.php?project=AMR-Wind) 
+[Website](https://www.exawind.org/) | [User manual](https://amr-wind.readthedocs.io) | [API docs](https://exawind.github.io/amr-wind/index.html) | [Nightly test dashboard](http://my.cdash.org/index.php?project=AMR-Wind) 
 
 [![Powered by AMReX](https://amrex-codes.github.io/badges/powered%20by-AMReX-red.svg)](https://amrex-codes.github.io/amrex/) [![Build Status](https://github.com/Exawind/amr-wind/workflows/AMR-Wind-CI/badge.svg)](https://github.com/Exawind/amr-wind/actions) [![Docs Status](https://readthedocs.org/projects/pip/badge/?version=latest)](https://amr-wind.readthedocs.io)
 

docs/sphinx_doc/dev/documentation.rst

@@ -62,14 +62,29 @@ provides an overview of this format and how to write documentation using this fo
 
 
 Documenting source code
------------------------
+-------------------------
 
 Source code (C++ files) are commented using a special format that allows Doxygen
 to extract the annotated comments and create source code documentation as well
-as inheritance diagrams. `Doxygen manual
-<http://www.doxygen.nl/manual/index.html>`_ provides an overview of the syntax
-that must be used. Please follow the Doxygen style of commenting code when
-commenting AMR-Wind sources.
+as inheritance diagrams. API documentation for the latest snapshot of the
+codebase can be browsed online `here
+<https://exawind.github.io/amr-wind/index.html>`_. To build the documentation
+locally, first install ``doxygen`` and ``graphviz`` executables on your system.
+Once they are successfully installed, execute the following command from the
+root directory of ``amr-wind``
+
+.. code-block:: console
+
+   doxygen ./docs/doxygen/Doxyfile
+
+The default format is HTML, and upon successful completion of the above command,
+the documentation files are available in :file:`build/html` directory. Open
+:file:`build/html/index.html` on your browser to browse the locally generated
+documentation.
+
+`Doxygen manual <http://www.doxygen.nl/manual/index.html>`_ provides an overview
+of the syntax that must be used. Please follow the Doxygen style of commenting
+code when commenting AMR-Wind sources.
 
 When commenting code, try to use self-documenting code, i.e., descriptive names
 for variables and functions that eliminate the need to describe what is going on