only run intergration test in master

.travis.yml

@@ -24,7 +24,7 @@ script:
   - go build ./sdk
   - go build ./services/...
   - go test -race -coverprofile=coverage.txt -covermode=atomic ./sdk/...
-  - if [ "$TRAVIS_BRANCH" == "master" ]; then go test -v -timeout 60s ./integration/... ; fi
+  - if [ "$TRAVIS_PULL_REQUEST" = "false" ]; then go test -v -timeout 60s ./integration/... ; fi
 
 after_success:
   - bash <(curl -s https://codecov.io/bash)

README_zh.md

@@ -1,4 +1,5 @@
 # 阿里云开发者 Go 工具套件
+
 [![Build Status](https://travis-ci.org/aliyun/alibaba-cloud-sdk-go.svg?branch=master)](https://travis-ci.org/aliyun/alibaba-cloud-sdk-go)
 [![Go Report Card](https://goreportcard.com/badge/github.com/aliyun/alibaba-cloud-sdk-go)](https://goreportcard.com/report/github.com/aliyun/alibaba-cloud-sdk-go)
 [![codecov](https://codecov.io/gh/aliyun/alibaba-cloud-sdk-go/branch/master/graph/badge.svg)](https://codecov.io/gh/aliyun/alibaba-cloud-sdk-go)