message: yarn version in README
diff: @@ -35,7 +35,7 @@ To get started -
  1. Clone the repo locally, via `git clone https://github.com/polkadot-js/common <optional local path>`
  2. Ensure that you have a recent version of Node.js, for development purposes [Node 10](https://nodejs.org/en/) is recommended.
  -3. Ensure that you have a recent version of Yarn, for development purposes [Yarn >=1.3.2](https://yarnpkg.com/docs/install) is required.
  +3. Ensure that you have a recent version of Yarn, for development purposes [Yarn >=1.10.1](https://yarnpkg.com/docs/install) is required.
  4. Install the dependencies by running `yarn`
  5. Build the API Docs, via `yarn run build`
  6. Ready! Now you can launch the API Docs, via `yarn gitbook serve`
  