ci: move azure project to Appium CI, update readme (appium#564)

Author: KazuCocoa

README.md

@@ -4,7 +4,7 @@
 [![Downloads](https://pepy.tech/badge/appium-python-client)](https://pepy.tech/project/appium-python-client)
 
 [![Build Status](https://travis-ci.org/appium/python-client.svg?branch=master)](https://travis-ci.org/appium/python-client)
-[![Build Status](https://dev.azure.com/ki4070ma/python-client/_apis/build/status/appium.python-client?branchName=master)](https://dev.azure.com/ki4070ma/python-client/_build/latest?definitionId=2&branchName=master)
+[![Build Status](https://dev.azure.com/AppiumCI/Appium%20CI/_apis/build/status/appium.python-client?branchName=master)](https://dev.azure.com/AppiumCI/Appium%20CI/_build/latest?definitionId=56&branchName=master)
 
 An extension library for adding [Selenium 3.0 draft](https://dvcs.w3.org/hg/webdriver/raw-file/tip/webdriver-spec.html) and [Mobile JSON Wire Protocol Specification draft](https://github.com/SeleniumHQ/mobile-spec/blob/master/spec-draft.md)
 functionality to the Python language bindings, for use with the mobile testing