Create an example of using parameterized traversals and templated scripts

[jeromatron]

The best way to use the String api is to use parameterized. We should have some examples of this in the repo. We should also add an example of a templated script to add data, similar to what the loader does. For extra credit we could show how to integrate that with kafka for streaming updates.

[jeromatron]

Templated scripts would be good as well as using a TinkerGraph argument mechanism that @dkuppitz used here: https://gist.github.com/dkuppitz/67f1d446a72366cca234b062810cadfb