ci: replace Travis with GitHub Actions

Minor cleanups in docs and build scripts

Change-Id: Icfab337d1b9c78f91ea0c47b65eb4dae6d589b18
diff --git a/docs/index.rst b/docs/index.rst
index ecf8f81..0cd704e 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -1,14 +1,14 @@
 NAC: Name-Based Access Control
 ==============================
 
-NAC is a C++ library, implementing Name-Based Access control primitives that can be
-used to implement content confidentiality in NDN applications.
+NAC is a C++ library providing Name-Based Access control primitives that
+can be used to implement content confidentiality in NDN applications.
 
-Please submit any bugs or issues to the `NAC issue tracker
-<http://redmine.named-data.net/projects/nac/issues>`__.
+Please submit any bug reports or feature requests to the `NAC issue tracker
+<https://redmine.named-data.net/projects/nac/issues>`__.
 
-NAC Documentation
----------------------
+Documentation
+-------------
 
 .. toctree::
    :hidden:
@@ -17,13 +17,10 @@
    spec
 
 - :doc:`spec`
-
-**Additional documentation**
-
 - `API documentation (doxygen) <doxygen/annotated.html>`_
 
 License
 -------
 
-NAC is an open source project licensed under LGPL 3.0 license. For more information about
+NAC is an open source project licensed under the LGPL version 3. For more information about
 the license, refer to `COPYING.md <https://github.com/named-data/name-based-access-control/blob/master/COPYING.md>`_.