chore: fix ci badges

Author: fengmk2

README.md

@@ -2,18 +2,12 @@ runscript
 =======
 
 [![NPM version][npm-image]][npm-url]
-[![build status][travis-image]][travis-url]
-[![appveyor build status][appveyor-image]][appveyor-url]
 [![Test coverage][codecov-image]][codecov-url]
 [![David deps][david-image]][david-url]
 [![npm download][download-image]][download-url]
 
 [npm-image]: https://img.shields.io/npm/v/runscript.svg?style=flat-square
 [npm-url]: https://npmjs.org/package/runscript
-[travis-image]: https://img.shields.io/travis/node-modules/runscript.svg?style=flat-square
-[travis-url]: https://travis-ci.org/node-modules/runscript
-[appveyor-image]: https://ci.appveyor.com/api/projects/status/n2jolahay1kk5kn5?svg=true
-[appveyor-url]: https://ci.appveyor.com/project/fengmk2/runscript
 [codecov-image]: https://codecov.io/github/node-modules/runscript/coverage.svg?branch=master
 [codecov-url]: https://codecov.io/github/node-modules/runscript?branch=master
 [david-image]: https://img.shields.io/david/node-modules/runscript.svg?style=flat-square