System package.json

[usernamefml]

The readme needs to updating explaining that when you wish to add a node module you need to add it to your system package.json instead of say the npm or github package.json for example.

I came across this problem when I was trying to add seneca-leveldb and tried to install it in nodezoo_npm or nodezoo_github but when I ran the entire setup in docker I could see that it was complaining seneca-leveldb was missing.

The reason for adding it to the system package.json is that when we rebuild the shared docker container all the packages that we need are added from the system package.json which makes sure we can rebuild faster.

So the readme for system needs to be updated explaining how things are built for deployment.