Merge pull request #1076 from FederatedAI/fix-master-readme_ci_badge

change readme's ci badge from develop to master

Author: dylan-fan

README.md

@@ -1,5 +1,5 @@
-[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0) [![CodeStyle](https://img.shields.io/badge/Check%20Style-Google-brightgreen)](https://checkstyle.sourceforge.io/google_style.html) [![Pinpoint Satellite](https://img.shields.io/endpoint?url=https%3A%2F%2Fscan.sbrella.com%2Fadmin%2Fapi%2Fv1%2Fpinpoint%2Fshield%2FFederatedAI%2FFATE)](https://github.com/mmyjona/FATE-Serving/pulls) [![Style](https://img.shields.io/badge/Check%20Style-Black-black)](https://checkstyle.sourceforge.io/google_style.html) [![Build Status](https://travis-ci.org/FederatedAI/FATE.svg?branch=develop)](https://travis-ci.org/FederatedAI/FATE)
-[![codecov](https://codecov.io/gh/FederatedAI/FATE/branch/develop/graph/badge.svg)](https://codecov.io/gh/FederatedAI/FATE)
+[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0) [![CodeStyle](https://img.shields.io/badge/Check%20Style-Google-brightgreen)](https://checkstyle.sourceforge.io/google_style.html) [![Pinpoint Satellite](https://img.shields.io/endpoint?url=https%3A%2F%2Fscan.sbrella.com%2Fadmin%2Fapi%2Fv1%2Fpinpoint%2Fshield%2FFederatedAI%2FFATE)](https://github.com/mmyjona/FATE-Serving/pulls) [![Style](https://img.shields.io/badge/Check%20Style-Black-black)](https://checkstyle.sourceforge.io/google_style.html) [![Build Status](https://travis-ci.org/FederatedAI/FATE.svg?branch=master)](https://travis-ci.org/FederatedAI/FATE)
+[![codecov](https://codecov.io/gh/FederatedAI/FATE/branch/master/graph/badge.svg)](https://codecov.io/gh/FederatedAI/FATE)
 
 <div align="center">
   <img src="./doc/images/FATE_logo.png">