This shared client can be used across all Node based servers that are written for different departments/processes. It will have all the needed methods across all the applications.
Add a dependency to this package in your package.json as follows
{
"name": "foo",
"version": "0.0.0",
"dependencies": {
"express": "visionmedia/express",
"node-activiti-client": "delhi-egov/node-activiti-client"
}
}