Create a better bootstrap script

[delambo]

Versions of kyt, node, OS

0.4.0

Bug or Feature?

Feature for contributors

Current Behavior

We have some bash scripts in /scripts for setting up and updating kyt.

Desired Behavior

I'd like to refactor this to JavaScript and add symlinking. That way it will be easier to read and maintain and work cross-platform. I'd also like to move the sub-packages in the packages directory to the top-level pacakges so it's easier to do this dynamically.

With the bootstrap script in place, the workflow for setting up kyt should look like:

git clone KYT
cd kyt
npm run bootstrap

and an update should look like:

git pull
npm run bootstrap

[delambo]

#377