Merge pull request #37 from IBM/main-support

fix(build): main migration

Author: Christian Compton

.releaserc

@@ -1,5 +1,5 @@
 {
-  "branch": "master",
+  "branches": "main",
   "debug": true,
   "verifyConditions": ["@semantic-release/changelog", "@semantic-release/git"],
   "plugins": [

README.md

@@ -1,6 +1,6 @@
 # IBM Cloud Unity SDK Core
 
-[![Build Status](https://travis-ci.org/IBM/unity-sdk-core.svg?branch=master)](https://travis-ci.org/IBM/unity-sdk-core/)
+[![Build Status](https://travis-ci.org/IBM/unity-sdk-core.svg?branch=main)](https://travis-ci.org/IBM/unity-sdk-core/)
 [![wdc-community.slack.com](https://wdc-slack-inviter.mybluemix.net/badge.svg)](http://wdc-slack-inviter.mybluemix.net/)
 [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release)
 [![CLA assistant](https://cla-assistant.io/readme/badge/IBM/unity-sdk-core)](https://cla-assistant.io/IBM/unity-sdk-core)