Update Lerna instructions

README.md

@@ -9,13 +9,13 @@ the packages in `./packages`.
 If you're working on a feature in this repo, you'll need to set it up on your machine with Lerna, the utility that manages our monorepo. At the moment we're using a beta version of Lerna 2, since Lerna 1 doesn't actually work. The easiest way to get started is to install Lerna globally:
 
 ```
-npm install -g [email protected]-beta.38
+npm install -g [email protected]
 ```
 
 Once you have lerna installed, run:
 
 ```
-lerna bootstrap
+lerna bootstrap --hoist
 ```
 
 from the root of the repository. This will install all packages' dependencies, transpile them, and symlink any interdependent packages together.