chore(docs): Update CI/CD documentation (#636)

Co-authored-by: Ashutosh <68329076+uniyalmani@users.noreply.github.com>

README.md

@@ -2,7 +2,7 @@
 
 <img alt="Illustration of a sheep" width=320 align=right src="https://user-images.githubusercontent.com/332258/46430732-c7bf5c80-c6fe-11e8-9cc8-2abc4e68dce2.jpg">
 
-![Travis status](https://img.shields.io/travis/NerdWalletOSS/shepherd/master.svg?style=flat-square)
+[![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/NerdWalletOSS/shepherd/release.yml?style=flat-square)](https://github.com/NerdWalletOSS/shepherd/actions)
 ![npm version](https://img.shields.io/npm/v/@nerdwallet/shepherd.svg?style=flat-square)
 ![GitHub issues](https://img.shields.io/github/issues/NerdWalletOSS/shepherd.svg?style=flat-square)
 

docs/releasing.md

@@ -1,8 +1,8 @@
 # Releasing Shepherd
 
-Shepherd uses [semantic-release](https://github.com/semantic-release/semantic-release), GitHub workflows, and [Travis CI](https://travis-ci.org/) to fully automate releases.
+Shepherd uses [semantic-release](https://github.com/semantic-release/semantic-release), GitHub workflows, and [GitHub Actions](https://docs.github.com/en/actions) to fully automate releases.
 
-Every merge to master triggers a GitHub workflow which culminates in a new tag. Every new tag triggers a Travis CI job which culminates in the new tagged version of Shepherd being published to npm.
+Every merge to master triggers a GitHub workflow which culminates in a new tag. Every new tag triggers a GitHub Action job which culminates in the new tagged version of Shepherd being published to npm.
 
 ## semantic-release
 

renovate.json

@@ -20,7 +20,7 @@
   "masterIssueAutoclose": true,
   "node": {
     "supportPolicy": [10, 12, 14],
-    "semanticCommitScope": "travis",
+    "semanticCommitScope": "github",
     "automerge": true
   },
   "packageRules": [