Add breaking change warning to readme

Author: Pearce-Ropion

.gitignore

@@ -1,5 +1,3 @@
-# See https://help.github.com/ignore-files/ for more about ignoring files.
-
 # dependencies
 node_modules/
 
@@ -9,22 +7,20 @@ coverage/
 # production
 dist/
 
-# misc
+# typescript
+tsc_output
+tsconfig*.tsbuildinfo
+
+# env
 .DS_Store
 .env.local
 .envrc
-eslint_output.json
-tsc_output
-
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-
-# vim
-*.swp
 
 # IDE files
 .idea
+*.swp
 
-# typescript
-tsconfig*.tsbuildinfo
+# logs
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 `@sigmacomputing/plugin` has moved to https://github.com/sigmacomputing/plugin and
 is now open source. Feel free to create an issue or contribute by opening a pull
-request. Read out `CONTRIBUTING.md` guide to get started.
+request. Read our `CONTRIBUTING.md` guide to get started.
 
 #### Breaking Changes
 

README.md

@@ -14,6 +14,13 @@ Plugins are built using Sigma’s Plugin API. This API communicates data and
 interaction events between a Sigma workbook and the plugin. Plugins are hosted
 by their developer and rendered in an iframe in Sigma.
 
+#### Warning: Breaking Changes
+
+`@sigmacomputing/plugin` has moved to https://github.com/sigmacomputing/plugin and
+is now open source. Please read our
+[CHANGELOG.md](https://github.com/sigmacomputing/plugin/blob/main/CHANGELOG.md)
+to review any breaking changes that have been made.
+
 ## Requirements
 
 To test your plugin in Sigma Plugin Dev Playground, you must: