Frames should use traversals to manipulate the graph

[jsight]

Based upon this conversation, this is the preferred way to create vertices and modify properties:

https://groups.google.com/forum/#!topic/gremlin-users/NFf9gJasjb8

Not doing this means that "EventStrategy" cannot be used effectively in conjunction with Ferma.

[freemo]

@jsight I will look into this further. A PR is always welcome as well.