Add python 3.7/8 tests for travis-ci

.travis.yml

@@ -4,8 +4,11 @@ sudo: false
 # Set the build language to Python
 language: python
 
-# Set the python version to 3.6
-python: 3.6
+# Set the python version to 3.(6,7,8)
+python: 
+  - "3.6"
+  - "3.7"
+  - "3.8"
 
 # Install the codecov pip dependency
 install:

README.md

@@ -2,6 +2,7 @@
 
 [![PyPI version](https://badge.fury.io/py/python3-anticaptcha.svg)](https://badge.fury.io/py/python3-anticaptcha)
 [![Build Status](https://semaphoreci.com/api/v1/andreidrang/python3-anticaptcha/branches/master/shields_badge.svg)](https://semaphoreci.com/andreidrang/python3-anticaptcha)
+[![Build Status](https://travis-ci.org/AndreiDrang/python3-anticaptcha.svg?branch=master)](https://travis-ci.org/AndreiDrang/python3-anticaptcha)
 [![Code Climate](https://codeclimate.com/github/AndreiDrang/python3-anticaptcha/badges/gpa.svg)](https://codeclimate.com/github/AndreiDrang/python3-anticaptcha)
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/2daabf7ff7974f01b9348fe64483c7af)](https://app.codacy.com/app/drang.andray/python3-anticaptcha?utm_source=github.com&utm_medium=referral&utm_content=AndreiDrang/python3-anticaptcha&utm_campaign=Badge_Grade_Settings)
 ![Callback_Server_Status Run](https://img.shields.io/badge/Callback_Server_Status-Run-blue.svg)