docs: update badges

Author: Scrum

README.md

@@ -59,11 +59,11 @@ posthtml()
 [style]: https://img.shields.io/badge/code%20style-standard-yellow.svg
 [style-url]: http://standardjs.com/
 
-[build]: https://travis-ci.org/posthtml/posthtml-webp.svg?branch=master
-[build-badge]: https://travis-ci.org/posthtml/posthtml-webp?branch=master
+[build]: https://travis-ci.org/posthtml/posthtml-webp.svg
+[build-badge]: https://travis-ci.org/posthtml/posthtml-webp
 
-[cover]: https://coveralls.io/repos/posthtml/posthtml-webp/badge.svg?branch=master
-[cover-badge]: https://coveralls.io/r/posthtml/posthtml-webp?branch=master
+[cover]: https://coveralls.io/repos/posthtml/posthtml-webp/badge.svg
+[cover-badge]: https://coveralls.io/r/posthtml/posthtml-web
 
 [chat]: https://badges.gitter.im/posthtml/posthtml.svg
 [chat-badge]: https://gitter.im/posthtml/posthtml?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge"