No example of path destination for parameters

[ryanmoran]

I spent some time today looking though each of the examples in the repo in order to try to gain some more context for some of the points of view expressed in https://github.com/deislabs/cnab-spec/issues/114. While I was looking, I noticed that there are currently no examples in the repository of using a path as a destination for a parameter. Do we have any use-cases that we can think of that might prove to be good examples of why the spec supports this feature?