[side-migrate] add readme

Author: toddtarsi

packages/side-migrate/README.md

@@ -0,0 +1,22 @@
+# About
+
+This package is meant to upgrade commands in a project from v3 to v4 effortlessly.
+
+## How to use
+
+Honestly, just do something like this:
+
+`npx @seleniuhq/side-migrate ./existing_file.side ./new_v4_file.side`
+
+After that, your project json should be upgraded to v4. If that doesn't work
+right for ya, please raise an issue [here](
+  https://github.com/SeleniumHQ/selenium-ide/issues/new?assignees=&labels=&projects=&template=bug.md
+)
+
+Thanks!
+
+## Contributing
+
+Oh gee golly! Oh gee willikers batman! What a generous offer! <3 I'd start in contributing [here](
+  https://github.com/SeleniumHQ/selenium-ide/issues/new?assignees=&labels=&projects=&template=bug.md
+) and you can just go where the flow takes you!

packages/side-migrate/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@seleniumhq/side-migrate",
-  "version": "4.0.0-alpha.2",
+  "version": "4.0.0-alpha.3",
   "private": false,
   "description": "Selenium IDE format migrations",
   "author": "Tomer <[email protected]>",