Travis: Add Python 3.7 and 3.8 to supported languages

List supported Python version in README file

Author: srittau

.travis.yml

@@ -1,5 +1,6 @@
 language: python
 python:
+  - "3.6"
   - "3.7"
   - "3.8"
 install: pip install -r requirements.txt

README.md

@@ -1,6 +1,7 @@
 # FakeSMTPd
 
 [![License](https://img.shields.io/pypi/l/FakeSMTPd.svg)](https://pypi.python.org/pypi/FakeSMTPd/)
+![PyPI - Python Version](https://img.shields.io/pypi/pyversions/fakesmtpd)
 [![GitHub Release](https://img.shields.io/github/release/srittau/fakesmtpd/all.svg)](https://github.com/srittau/FakeSMTPd/releases/)
 [![pypi Release](https://img.shields.io/pypi/v/FakeSMTPd.svg)](https://pypi.python.org/pypi/FakeSMTPd/)
 [![Build Status](https://travis-ci.org/srittau/FakeSMTPd.svg?branch=master)](https://travis-ci.org/srittau/FakeSMTPd)

setup.py

@@ -25,6 +25,8 @@ def read(fname):
         "License :: OSI Approved :: MIT License",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.6",
+        "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
         "Topic :: Communications :: Email :: Mail Transport Agents",
         "Topic :: Software Development :: Testing",
     ],