Update README and docs for travis-ci.com migration.

README.md

@@ -2,7 +2,7 @@ This repository contains bindings of the Magnum C++11/C++14 graphics engine
 into other languages such as Python.
 
 [![Join the chat at https://gitter.im/mosra/magnum](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/mosra/magnum?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
-[![Build Status](https://travis-ci.org/mosra/magnum-bindings.svg?branch=master)](https://travis-ci.org/mosra/magnum-bindings)
+[![Build Status](https://travis-ci.com/mosra/magnum-bindings.svg?branch=master)](https://travis-ci.com/mosra/magnum-bindings)
 [![Coverage Status](https://codecov.io/gh/mosra/magnum-bindings/branch/master/graph/badge.svg)](https://codecov.io/gh/mosra/magnum-bindings)
 [![MIT License](https://img.shields.io/badge/license-MIT-green.svg)](https://opensource.org/licenses/MIT)
 

doc/python/pages/building.rst

@@ -188,7 +188,7 @@ following commands, the resulting HTML overview is located in
 
 In ``package/ci/`` there is a ``travis.yml`` file that compiles and tests the
 bindings on Linux GCC 4.8 + CMake 3.1 and on macOS, online at
-https://travis-ci.org/mosra/magnum-bindings. For Windows there is an
+https://travis-ci.com/mosra/magnum-bindings. For Windows there is an
 ``appveyor.yml`` testing on Windows with MSVC 2017 and 2019, online at
 https://ci.appveyor.com/project/mosra/magnum-bindings. Code coverage for both
 the C++ bindings code and Python side is reported to