externalCIServer is used to connect your continuous integration jobs in other CI servers such as Jenkins to Shippable Assembly Lines. This resource is the root resource which is used to update status of externalCI jobs.
You can create a externalCI job by adding it to your shippable.yml file and thereafter creating a syncRepo in your Shippable UI.
resources: - name: <string> type: externalCIServer
name-- should be an easy to remember text string
type-- is set to