fix for pre-released issue with aggregated release

temp: added dist/index.js

Update README to reference baseBranch, use "main" as default in examp…

…les (changesets#180)

* chore(docs): Update README to reference baseBranch

- Adds reference to the `baseBranch` config in the Changesets docs
- Updates all references in examples to `main` instead of `master`
  - `main` is now the default branch in new GitHub projects
  - This change aligns with the comment in the `baseBranch` section of Changesets docs

* remove commit sha from docs URL