Example build instructions

Unless otherwise mentioned in the readme of a specific example project, the following instructions are valid for all browser examples included in this repo:

To avoid having to install duplicates of the various dev dependencies for each project, it's best to first build the entire mono repo once (takes about 2 mins) and then not require a separate yarn install for each example:

git clone https://github.com/thi-ng/umbrella.git

# first build the entire mono-repo
yarn install
yarn build

# then run example
cd umbrella/examples/<example>
yarn start

# or build production version
yarn build