Update metadata

Author: alvarolopez

README.rst renamed to README.md

@@ -1,6 +1,6 @@
-=====
-gabon
-=====
+# gabon
+
+Disclaimer: This is an endless work in progress...
 
 Gabon (Google contacts AddressBOk in Ncurses) is a Google contacts-based
 addressbook written in Python and based in ncurses.
@@ -10,6 +10,6 @@ it possible to use those contacts from the command-line and from MUAs such as
 Mutt, so can be used as a replacement for abook. Another great command line
 client for google contacts is GooBook: https://gitlab.com/goobook/goobook
 
-* Free software: Apache license
+*  Free software: Apache license
 * Source: https://github.com/alvarolopez/gabon
 * Bugs: https://github.com/alvarolopez/gabon/issues

setup.cfg

@@ -1,21 +1,34 @@
 [metadata]
 name = gabon
 summary = Google contacts organizer in ncurses.
-description-file =
-    README.rst
+description-file = README.md
+description-content-type = text/markdown; charset=UTF-8
+
 author = Alvaro Lopez Garcia
 author-email = [email protected]
+
 home-page = https://github.com/alvarolopez/gabon
+project_urls =
+    Bug Tracker = https://github.com/alvarolopez/gabon/issues   
+
+python-requires = >=3.6
+
+license = Apache-2
+license_file = LICENSE
+
 classifier =
+    Environment :: Console
+    Environment :: Console :: Curses
+    Intended Audience :: End Users/Desktop
     Intended Audience :: Information Technology
-    Intended Audience :: System Administrators
     License :: OSI Approved :: Apache Software License
     Operating System :: POSIX :: Linux
     Programming Language :: Python
-    Programming Language :: Python :: 2
-    Programming Language :: Python :: 2.7
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.3
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Topic :: Communications :: Email   
+    Topic :: Communications :: Email :: Address Book   
 
 [files]
 packages =