doc update: rename CHANGES.txt -> .rst, improve README
diff --git a/CHANGES.txt b/CHANGES.rst
similarity index 100%
rename from CHANGES.txt
rename to CHANGES.rst
diff --git a/README.rst b/README.rst
index 91a2049..a427a57 100644
--- a/README.rst
+++ b/README.rst
@@ -31,7 +31,9 @@
============
``pip install pyserial`` should work for most users.
-Detailed information can be found in "documentation/pyserial.rst".
+Detailed information can be found in `documentation/pyserial.rst`_.
The usual setup.py for Python libraries is used for the source distribution.
Windows installers are also available (see download link above).
+
+.. _`documentation/pyserial.rst`: https://github.com/pyserial/pyserial/blob/master/documentation/pyserial.rst#installation
