Added doc to update dependecies (#910)

* Bumped all versions

* Added docs

README.md

@@ -20,6 +20,10 @@ Each of these plugins retrieves data from a Kubernetes cluster and sends it to I
 **Want to learn more?** Reach out on [the Slack channel](https://fairwindscommunity.slack.com/messages/fairwinds-insights) ([request invite](https://join.slack.com/t/fairwindscommunity/shared_invite/zt-e3c6vj4l-3lIH6dvKqzWII5fSSFDi1g)), send an email to `opensource@fairwinds.com`, or join us for [office hours on Zoom](https://fairwindscommunity.slack.com/messages/office-hours)
 
 
+## Updating libraries:
+UPDATE_PKG=golang.org/x/net ./scripts/update-go-mod-all.sh
+./scripts/bump-changed.sh "update dependencies"
+
 ## Repository Layout
 
 * `.circleci` contains the Circle CI configuration.