Suggestions for using Video.js scripts

how would you go about extending this plugins version of the Video.js player, with such things as the Google ima sdk, to be able to have pre roll ads for example?

Where should the other required files be placed, would there be other plugins to make this easier, thinking of…
https://github.com/googleads/videojs-ima/tree/master/src

I am un clear how to incorporate the other videojs goodie scripts.

thanks for any suggestions.